Ford Obdii Codes And Related Info

Grumpy · May 23, 2019

Ford Check Engine Light Codes
Welcome to the Ford Check Engine Light codes page. Below you will find the most complete list of Ford trouble codes available. The code definitions are a good starting point when determining the cause of the service engine light but where do you go from there? We have a large number of resources to help you repair the problem. Here is how we suggest you proceed. Look up your code definition. This tells you where to start testing. If you are unsure of any abbreviations, check out the acronym list by clicking on the link at the left.

Next, read our article Automotive Circuit Testing 101, and if there is an article related to the system you are testing, such as Oxygen Sensors or EGR concerns, read these as well. They will provide valuable info! If there is a link to a specific diagnosis strategy for the code then follow that and start testing. If there is no procedure for your manufacturer specific code, then I suggest referring to a similar generic OBD II code (these are listed numerically by system type) to get a good idea of what to look for. If at this point you still need assistance use the "Get Help" link and let us know how we can help. We can provide information on component location, specifications, circuit color/location and more. We do ask that you please read the info available on the site first so that we can help reduce repeat questions. So please read our Disclaimer and when you're ready jump in!

https://www.engine-light-help.com/lincoln-check-engine-light.html

Also, we value your feedback and like to hear stories of unusual fixes or concerns you may have run into with your Check Engine Light, so feel free to share your experiences by using the "Contact Us" link. Let's go!
We do our best to update these Ford check engine light codes as frequently as possible. If you find one missing let us know and we we'll add it immediately! Please use the form on our Contact Page to get in touch with us. We certainly understand how frustrating it can be to look for a code definition and have it not online when you need it. And lets face it, if the service engine light is on then you need it now! It's easiest to use the "Find On This Page" feature of your browser's "Edit" menu to find codes on this page as the list is quite long. These are listed in numerical order for easy searching.

When retrieving Ford check engine light codes with an OBD II scan tool, proceed as follows:
1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover.
2. Turn the ignition on.
3. Follow scan tool manufacturer's operating instructions to access the Diagnostic Trouble Codes (DTC's).

Remember, these are manufacturer specific codes only. Refer to our Generic OBD II code list for definitions on all other Ford diagnostic trouble codes.

Manufacturer Specific Codes

P1000 OBD System Readiness Test Not Complete

P1001 KOER Test Cannot Be Completed

P1039 Vehicle Speed Signal Missing or Improper

P1051 Brake Switch Signal Missing or Improper

P1100 Mass Air Flow Sensor Intermittent

P1101 Mass Air Flow Sensor Out of Self-Test Range

P1105 Dual Alternator Upper Fault

P1106 Dual Alternator Lower Fault/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage

P1107 Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage

P1108 Dual Alternator Battery Lamp Circuit Malfunction

P1109 IAT - B Sensor Intermittent

P1111 System Pass

P1112 Intake Air Temperature Sensor Intermittent

P1114 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent Low Voltage/IAT - B Circuit Low Input

P1115 Engine Coolant Temperature (ECT) Sensor Circuit Intermittent High Voltage/IAT - B Circuit High Input

P1116 Engine Coolant Temperature Sensor is Out of Self-Test Range

P1117 Engine Coolant Temperature Sensor Intermittent

P1118 Manifold Absolute Temperature Circuit Low Input

P1119 Manifold Absolute Temperature Circuit High Input

P1120 Throttle Position Sensor Out of Range

P1121 Throttle Position Sensor Inconsistent with Mass Air Flow Sensor

P1122 Throttle Position (TP) Sensor Circuit Intermittent Low Voltage

P1123 Throttle Position Sensor In Range But Higher Than Expected

P1124 Throttle Position Sensor Out of Self-Test Range

P1125 Throttle Position Sensor Intermittent

P1127 Exhaust Not Warm Enough - Downstream O2 Sensor Not Tested - Read Our Article on Oxygen Sensor Codes For Help With This Ford Check Engine Light Code

P1128 Upstream Heated Oxygen Sensor Signals Reversed - Read Our Article on Oxygen Sensor Codes For Help With This Ford Check Engine Light Code

P1129 Downstream Heated Oxygen Sensor Signals Reversed - Read Our Article on Oxygen Sensor Codes For Help With This Ford Check Engine Light Code

P1130 Lack of Upstream Heated Oxygen Sensor Switch - Adaptive Fuel Limit - Bank 1 - Read Our Article on Oxygen Sensor Codes For Help With This Ford Check Engine Light Code

P1131 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank 1 - Read Our Article on Oxygen Sensor CodesFor Help With This Ford Check Engine Light Code

P1132 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank 1 - Read Our Article on Oxygen Sensor CodesFor Help With This Ford Check Engine Light Code

P1133 Bank 1 Fuel Control Shifted Lean - Read Our Article on Oxygen Sensor Codes For Help With This Ford Check Engine Light Code

P1134 Bank 1 Fuel Control Shifted Rich - Read Our Article on Oxygen Sensor Codes For Help With This Ford Check Engine Light Code

P1135 Pedal Position Sensor A Circuit Intermittent

P1137 Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank 1 - Read Our Article on Oxygen Sensor CodesFor Help With This Ford Check Engine Light Code

P1138 Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank 1 - Read Our Article on Oxygen Sensor CodesFor Help With This Ford Check Engine Light Code

P1139 Water In Fuel Indicator Circuit Malfunction

P1140 Water In Fuel Condition

P1141 Fuel Restriction Indicator Circuit Malfunction

P1142 Fuel Restriction Condition

P1150 Lack of Upstream Heated Oxygen Sensor Switch - Adaptive Fuel Limit - Bank 2 - Read Our Article on Oxygen Sensor Codes For Help With This Ford Check Engine Light Code

P1151 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank 2 - Read Our Article on Oxygen Sensor CodesFor Help With This Ford Check Engine Light Code

P1152 Lack of Upstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank 2 - Read Our Article on Oxygen Sensor CodesFor Help With This Ford Check Engine Light Code

P1153 Bank 2 Fuel Control Shifted Lean - Read Our Article on Oxygen Sensor Codes For Help With This Ford Check Engine Light Code

P1154 Bank 2 Fuel Control Shifted Rich - Read Our Article on Oxygen Sensor Codes For Help With This Ford Check Engine Light Code

P1155 Alternative Fuel Controller

P1157 Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank 2 - Read Our Article on Oxygen Sensor CodesFor Help With This Ford Check Engine Light Code

P1158 Lack of Downstream Heated Oxygen Sensor Switch - Sensor Indicates Rich - Bank 2 - Read Our Article on Oxygen Sensor CodesFor Help With This Ford Check Engine Light Code

P1168 Fuel Rail Sensor In-Range Low Failure

P1169 Fuel Rail Sensor In-Range High Failure

P1170 ESO - Engine Shut Off Solenoid Fault

P1171 Rotor Sensor Fault

P1172 Rotor Control Fault

P1173 Rotor Calibration Fault

P1174 Cam Sensor Fault

P1175 Cam Control Fault

P1176 Cam Calibration Fault

P1177 Synchronization Fault

P1180 Fuel Delivery System Malfunction - Low

P1181 Fuel Delivery System Malfunction - High

P1183 Engine Oil Temperature Circuit Malfunction

P1184 Engine Oil Temperature Out Of Self Test Range

P1185 FTS High - Fuel Pump Temperature Sensor High

P1186 FTS Low - Fuel Pump Temperature Sensor Low

P1187 Variant Selection

P1188 Calibration Memory Fault

P1189 Pump Speed Signal Fault

P1190 Calibration Resistor Out Of Range

P1191 Key Line Voltage

P1192 Voltage External

P1193 EGR Drive Overcurrent

P1194 ECU A/D Converter

P1195 SCP HBCC Failed To Initialize

P1196 Key Off Voltage High

P1197 Key Off Voltage Low

P1198 Pump Rotor Control Underfueling

P1209 Injector Control Pressure System Fault

P1210 Injector Control Pressure Above Expected Level

P1211 Injector Control Pressure Sensor Above / Below Desired

P1212 Injector Control Pressure Not Detected During Crank

P1213 Start Injector Circuit Malfunction

P1214 Pedal Position Sensor B Circuit Intermittent

P1215 Pedal Position Sensor C Circuit Low Input

P1216 Pedal Position Sensor C Circuit High Input

P1217 Pedal Position Sensor C Circuit Intermittent

P1218 CID High

P1219 CID Low

P1220 Series Throttle Control Fault

P1221 Traction Control System Malfunction

P1222 Traction Control Output Circuit Malfunction

P1223 Pedal Demand Sensor B Circuit High Input

P1224 Throttle Position Sensor B Out of Self-Test Range

P1227 Wastegate Failed Closed (Over Pressure)

P1228 Wastegate Failed Open (Under Pressure)

P1229 Intercooler Pump Driver Fault

P1230 Open Power to Fuel Pump Circuit

P1231 High Speed Fuel Pump Relay Activated

P1232 Low Speed Fuel Pump Primary Circuit Failure

P1233 Fuel Pump Driver Module Off-Line

P1234 Fuel Pump Driver Module Off-Line

P1235 Fuel Pump Control Out of Range

P1236 Fuel Pump Control Out of Range

P1237 Fuel Pump Secondary Circuit Fault

P1238 Fuel Pump Secondary Circuit Fault

P1239 Speed Fuel Pump Positive Feed Fault

P1243 Second Fuel Pump Faulty or Ground Fault

P1244 Alternator Load Input Failed High

P1245 Alternator Load Input Failed Low

P1246 Alternator Load Input Failed

P1247 Turbo Boost Pressure Low

P1248 Turbo Boost Pressure Not Detected

P1249 Wastegate Control Valve Performance

P1250 Lack of Power to FPRC Solenoid

P1252 Pedal Correlation PDS1 and LPDS High

P1253 Pedal Correlation PDS1 and LPDS Low

P1254 Pedal Correlation PDS2 and LPDS High

P1255 Pedal Correlation PDS2 and LPDS Low

P1256 Pedal Correlation PDS1 and HPDS

P1257 Pedal Correlation PDS2 and HPDS

P1258 Pedal Correlation PDS1 and PDS2

P1260 Theft Detected - Engine Disabled - Related Information

P1261 Cylinder #1 High To Low Side Short

P1262 Cylinder #2 High To Low Side Short

P1263 Cylinder #3 High To Low Side Short

P1264 Cylinder #4 High To Low Side Short

P1265 Cylinder #5 High To Low Side Short

P1266 Cylinder #6 High To Low Side Short

P1267 Cylinder #7 High To Low Side Short

P1268 Cylinder #8 High To Low Side Short

P1270 Engine RPM or Vehicle Speed Limiter Reached

P1270 Engine RPM Or Speed Limiter Reached

P1271 Cylinder #1 High To Low Side Open

P1272 Cylinder #2 High To Low Side Open

P1273 Cylinder #3 High To Low Side Open

P1274 Cylinder #4 High To Low Side Open

P1275 Cylinder #5 High To Low Side Open

P1276 Cylinder #6 High To Low Side Open

P1277 Cylinder #7 High To Low Side Open

P1278 Cylinder #8 High To Low Side Open

P1280 Injection Control Pressure Out Of Range Low

P1281 Injection Control Pressure Out Of Range High

P1282 Excessive Injection Control Pressure

P1283 IPR Circuit Failure

P1284 Aborted KOER - ICP Failure

P1285 Cylinder head over temp sensed

P1286 Fuel Pulse In Range But Lower Than Expected

P1287 Fuel Pulse In Range But Higher Than Expected

P1288 Cylinder Head Temperature Sensor Out of Self-Test Range

P1289 Cylinder Head Temperature Sensor Signal Greater Than Self-Test Range

P1290 Cylinder Head Temperature Sensor Signal Less Than Self-Test Range

P1291 Injector High Side Short To GND Or VBATT - Bank 1

P1292 Injector High Side Short To GND Or VBATT - Bank 2

P1293 Injector High Side Open - Bank 1

P1294 Injector High Side Open - Bank 2/Target idle not reached

P1295 Multi-faults - Bank 1 - With Low Side Shorts

P1296 Multi-faults - Bank 2 - With Low Side Shorts

P1297 Injector High Sides Shorted Together

P1298 IDM Failure

P1299 Cylinder Head Temperature Sensor Detected Engine Overheating Condition

P1300 Boost Calibration Fault

P1301 Boost Calibration High

P1302 Boost Calibration Low

P1303 EGR Calibration Fault - Read Our Article on EGR Valve Codes For Help With This Ford Check Engine Light Code

P1304 EGR Calibration High

P1305 EGR Calibration Low

P1306 Kickdown Relay Pull - In Circuit Fault

P1307 Kickdown Relay Hold Circuit Fault

P1308 A/C Clutch Circuit Fault

P1309 Misfire Detection Monitor Not enabled

P1316 Injector Circuit / IDM Codes Detected

P1317 Injector Circuit / IDM Codes Not Updated

P1340 Camshaft Position Sensor B Circuit Malfunction

P1351 Ignition Diagnostic Monitor Circuit Input Fault

P1352 Ignition Coil A - Primary Circuit Fault

P1353 Ignition Coil B - Primary Circuit Fault

P1354 Ignition Coil C - Primary Circuit Fault

P1355 Ignition Coil D - Primary Circuit Fault

P1356 Loss of Ignition Diagnostic Module Input to PCM

P1357 Ignition Diagnostic Monitor Pulsewidth Not Defined

P1358 Ignition Diagnostic Monitor Signal Out of Self-Test Range

P1359 Spark Output Circuit Fault

P1360 Ignition Coil A Secondary Circuit Malfunction

P1361 Ignition Control (IC) Circuit Low Voltage

P1362 Ignition Coil C Secondary Circuit Malfunction

P1363 Ignition Coil D Secondary Circuit Malfunction

P1364 Ignition Coil Primary Circuit Fault

P1365 Ignition Coil Secondary Circuit Failure

P1369 Engine Temperature Light Monitor Failure

P1380 VCT Solenoid Valve Circuit Short or Open

P1381 Cam Timing Advance is excessive - Related Information

P1383 Cam Timing Advance is excessive

P1385 Variable Cam Timing Solenoid B Malfunction

P1386 Variable Cam Timing Overadvanced (Bank #2)

P1388 Variable Cam Timing Overretarded (Bank #2)

P1389 Glow Plug Circuit High Side Low Input

P1390 Octane Adjust Out of Self-Test Range

P1391 Glow Plug Circuit Low Input (Bank #1)

P1392 Glow Plug Circuit High Input (Bank #1)

P1393 Glow Plug Circuit Low Input (Bank #2)

P1394 Glow Plug Circuit High Input (Bank #2)

P1395 Glow Plug Monitor Fault (Bank #1)

P1396 Glow Plug Monitor Fault (Bank #2)

P1397 System Voltage Out Of Self Test Range

P1399 Glow Plug Circuit High Side, High Input

P1400 Differential Pressure Feedback Electronic Sensor Circuit Low Voltage - Read Our Article on EGR System Diagnosis For Help With This Ford Check Engine Light Code

P1401 Differential Pressure Feedback Electronic Sensor Circuit High Voltage - Read Our Article on EGR System Diagnosis For Help With This Ford Check Engine Light Code

P1402 EGR Metering Orifice Restricted - Read Our Article on EGR System Diagnosis For Help With This Ford Check Engine Light Code

P1403 Differential Pressure Feedback Electronic Sensor Hoses Reversed - Read Our Article on EGR System Diagnosis For Help With This Ford Check Engine Light Code

P1404 IAT - B Circuit Malfunction/ Exhaust Gas Recirculation Closed Position Performance

P1405 Differential Pressure Feedback Electronic Sensor Circuit Upstream Hose - Read Our Article on EGR System Diagnosis For Help With This Ford Check Engine Light Code

P1406 Differential Pressure Feedback Electronic Sensor Circuit Downstream Hose - Read Our Article on EGR System Diagnosis For Help With This Ford Check Engine Light Code

P1407 EGR No Flow Detected - Read Our Article on EGR System Diagnosis For Help With This Ford Check Engine Light Code

P1408 EGR Flow Out of Self-Test Range - Read Our Article on EGR System Diagnosis For Help With This Ford Check Engine Light Code

P1409 EGR Vacuum Regulator Circuit malfunction - Read Our Article on EGR System Diagnosis For Help With This Ford Check Engine Light Code

P1409 Electronic Vacuum Regulator Control Circuit Fault - Read Our Article on EGR System Diagnosis For Help With This Ford Check Engine Light Code

P1410 EGR Barometric Pressure Sensor VREF Voltage - Read Our Article on EGR System Diagnosis For Help With This Ford Check Engine Light Code

P1411 Secondary Air is Not being diverted

P1413 Secondary Air Injection System Monitor Circuit Low Voltage

P1414 Secondary Air Injection System Monitor Circuit High Voltage

P1431 Misfire Monitor Disabled, Unable to Learn Trigger Wheel Profile

P1442 Secondary Air Injection System Monitor Circuit High Voltage

P1443 Evaporative Emission Control System - Vacuum System - Purge Control Solenoid or Purge Control Valve Fault

P1444 Purge Flow Sensor Circuit Input Low

P1445 Purge Flow Sensor Circuit Input High

P1450 Inability of Evaporative Emission Control System to Bleed Fuel Tank

P1451 EVAP Control System Canister Vent Solenoid Circuit Malfunction

P1452 Inability of Evaporative Emission Control System to Bleed Fuel Tank

P1455 Substantial Leak or Blockage in Evaporative Emission Control System

P1457 Unable To Pull Vacuum In Tank

P1460 Wide Open Throttle Air Conditioning Cutoff Circuit malfunction

P1461 Air Conditioning Pressure Sensor Circuit Low Input

P1462 Air Conditioning Pressure Sensor Circuit high Input

P1463 Air Conditioning Pressure Sensor Insufficient Pressure change

P1464 ACCS to PCM High During Self-Test

P1465 A/C Relay Circuit Malfunction

P1466 A/C Refrigerant Temperature Sensor/Circuit Malfunction

P1469 Low Air Conditioning Cycling Period

P1473 Fan Secondary High with Fans Off

P1474 Low Fan Control Primary Circuit

P1479 High Fan Control Primary Circuit

P1480 Fan Secondary Low with Low Fans On

P1481 Fan Secondary Low with High Fans On

P1482 SCP

P1483 Power to Cooling Fan Exceeded Normal Draw

P1484 Variable Load Control Module Pin 1 Open

P1485 EGRV Circuit Malfunction

P1500 Vehicle Speed Sensor Intermittent

P1501 Programmable Speedometer & Odometer Module/Vehicle Speed Sensor Intermittent Circuit-failure

P1502 Invalid or Missing Vehicle Speed Message or Brake Data

P1504 Intake Air Control Circuit malfunction

P1505 Idle Air Control System at Adaptive Clip

P1506 Idle Air Control Over Speed Error

P1507 Idle Air Control Under Speed Error

P1512 Intake Manifold Runner Control Stuck Closed

P1513 Intake Manifold Runner Control Stuck Closed

P1516 Intake Manifold Runner Control Input Error

P1517 Intake Manifold Runner Control Input Error

P1518 Intake Manifold Runner Control Fault - Stuck Open

P1519 Intake Manifold Runner Control Stuck Open

P1520 Intake Manifold Runner Control Circuit Fault

P1519 Intake Manifold Runner Control Fault - Stuck Closed

P1520 Intake Manifold Runner Control Fault

P1530 Open or Short to A/C Compressor Clutch Circuit

P1531 Invalid Test - Accelerator Pedal Movement

P1532 IMCC Circuit Malfunction, Bank B

P1533 AAI Circuit Malfunction

P1534 Inertia Switch Activated

P1536 Parking Brake Switch Circuit Failure

P1537 Intake Manifold Runner Control Stuck Open

P1538 Intake Manifold Runner Control Stuck Open

P1539 Power to A/C Compressor Clutch Circuit Exceeded Normal Current Draw

P1549 Intake Manifold Temperature Valve Vacuum Actuator Connection

P1550 Power Steering Pressure Sensor Out of Self-Test Range

P1565 Speed Control Command Switch Out of Range High

P1566 Speed Control Command Switch Out of Range Low

P1567 Speed Control Output Circuit Continuity

P1568 Speed Control Unable to Hold Speed

P1572 Brake Pedal Switch Circuit Malfunction

P1573 Throttle Position Not Available

P1574 Throttle Position Sensor Disagreement btwn Sensors

P1575 Pedal Position Out of Self Test Range

P1576 Pedal Position Not Available

P1577 Pedal Position Sensor Disagreement btwn Sensors

P1578 ETC Power Less Than Demand

P1579 ETC In Power Limiting Mode

P1580 Electronic Throttle Monitor PCM Override

P1581 Electronic Throttle Monitor Malfunction

P1582 Electronic Throttle Monitor Data Available

P1583 Electronic Throttle Monitor Cruise Disable

P1584 Throttle Control Detected ETB Malfunction

P1585 Throttle Control Unit Malfunction

P1586 Throttle Control Unit Throttle Position Malfunction

P1587 Throttle Control Unit Modulated Command Malfunction

P1588 Throttle Control Unit Detected Loss of Return Spring

P1589 Throttle Control Unit Unable To Control Desired Throttle Angle

P1600 Loss of KAM Power - Open Circuit

P1605 PCM Keep Alive Memory Test Error

P1625 Voltage to Vehicle Load Control Module Fan Circuit Not detected

P1626 Voltage to Vehicle Load Control Module Circuit Not detected

P1634 Data Output Link Circuit Failure

P1635 Tire / Axle Ratio Out of Acceptable Range

P1636 Inductive Signature Chip Communication Error

P1639 Vehicle ID Block Corrupted or Not Programmed

P1640 Powertrain DTCs Available in Another Module

P1641 Fuel Pump Primary Circuit Failure

P1642 Fuel Pump Monitor Circuit High Input

P1643 Fuel Pump Monitor Circuit Low Input

P1644 Fuel Pump Speed Control Circuit Malfunction

P1650 Power Steering Pressure Switch Out of Self-Test Range

P1651 Power Steering Pressure Switch Input Fault

P1656 CAN Link PCM - PCM Circuit - Network

P1657 CAN Link Chip Malfunction

P1660 Output Circuit Check Signal High

P1661 Output Circuit Check Signal Low

P1662 IDM_EN Circuit Failure

P1663 Fuel Demand Command Signal Circuit Malfunction

P1667 CI Circuit Malfunction

P1668 PCM - IDM Communications Error

P1670 Electronic Feedback Signal Not Detected

P1690 Wastegate Solenoid Circuit Malfunction

P1700 Transmission system problems

P1701 Reverse Engagement Error

P1702 Transmission system problems

P1703 Brake On/Off Switch Out of Self-Test Range

P1704 Transmission system problems

P1705 Manual Lever Position Sensor Out of Self-Test Range

P1706 High Vehicle Speed Observed in Park

P1707 Transfer Case Neutral Indicator Hard Fault Present

P1709 Park or Neutral Position Switch Out of Self-Test Range

P1710 Transmission system problems

P1711 Transmission Fluid Temperature Sensor Out of Self-Test Range

P1712 Trans Torque Reduction Request Signal Malfunction

P1713 TFT Sensor In Range Failure Low Value

P1714 SSA Inductive Signature Malfunction

P1715 SSB Inductive Signature Malfunction

P1716 SSC Inductive Signature Malfunction

P1717 SSD Inductive Signature Malfunction

P1718 TFT Sensor In Range Failure High

P1720 Vehicle Speed (Meter) Circuit Malfunction

P1721 Gear 1 Incorrect Ratio

P1722 Gear 2 Incorrect Ratio

P1723 Gear 3 incorrect Ratio

P1724 Gear 4 Incorrect Ratio

P1725 Insufficient Engine Speed Increase During Self Test

P1726 Insufficient Engine Speed Decrease During Self Test

P1727 Coast Clutch Solenoid Inductive Signature Malfunction

P1728 Transmission Slip Error

P1729 4x4 Low Switch Error

P1731 1-2 Shift Malfunction

P1732 2-3 Shift Malfunction

P1733 3-4 Shift Malfunction

P1740 Transmission system problems

P1741 Torque Converter Clutch Control Error

P1742 Torque Converter Clutch Solenoid Faulty

P1743 Torque Converter Clutch Solenoid Faulty

P1744 Torque Converter Clutch System Stuck in Off Position

P1745 Transmission system problems

P1746 Electronic Pressure Control Solenoid A - Open Circuit

P1747 Electronic Pressure Control Solenoid A- Short Circuit

P1748 EPC Malfunction

P1749 Electronic Pressure Control Solenoid Failed Low

P1751 Shift Solenoid A Performance

P1754 Coast Clutch Solenoid Circuit malfunction

P1756 Shift Solenoid B Performance

P1760 Transmission system problems

P1761 Shift Solenoid C Performance

P1762 Overdrive Band Failed Off

P1766 Shift Solenoid D Performance

P1767 Torque Converter Clutch Circuit Malfunction

P1768 Performance / Normal / Winter Mode Input Malfunction

P1770 Clutch Solenoid Circuit Malfunction

P1779 Transmission Control Indicator Lamp Circuit Malfunction

P1780 Transmission Control Switch Circuit is Out of Self-Test Range

P1781 4x4 Low Switch is Out of Self-Test Range

P1782 P/ES Circuit Out Of Self Test Range

P1783 Transmission Over-Temperature Condition

P1784 Transmission Mechanical Failure - First And Reverse

P1785 Transmission Mechanical Failure - First And Second

P1786 3-2 Downshift Error

P1787 2-1 Downshift Error

P1788 Pressure Control Solenoid "B" Open Circuit

P1789 Pressure Control Solenoid "B" Short Circuit

P1795 Idle Switch Circuit Malfunction

P1804 Transmission 4-Wheel Drive High Indicator Circuit Failure

P1806 Transmission 4-Wheel Drive High Indicator Short Circuit To Battery

P1808 Transmission 4-Wheel Drive Low Indicator Circuit Failure

P1810 TFP Valve Position Switch Circuit/ Transmission 4-Wheel Drive Low Indicator Short Circuit To Battery

P1812 Transmission 4-Wheel Drive Mode Select Circuit Failure

P1815 Transmission 4-Wheel Drive Mode Select Short Circuit To Ground

P1819 Transmission Neutral Safety Switch Short Circuit To Ground

P1820 Transmission Transfer Case Clockwise Shift Relay Coil Circuit Failure

P1822 Transmission Transfer Case Clockwise Shift Relay Coil Short Circuit To Battery

P1824 Transmission 4-Wheel Drive Clutch Relay Circuit Failure

P1826 Transmission 4-Wheel Drive Low Clutch Relay Circuit To Battery

P1828 Transmission Transfer Case Counter Clockwise Shift Relay Coil Circuit Failure

P1830 Transmission Transfer Case Counter Clockwise Shift Relay Coil Short Circuit To Battery

P1832 Transmission Transfer Case Differential Lock-Up Solenoid Circuit Failure

P1834 Transmission Transfer Case Differential Lock-Up Solenoid Short Circuit To Battery

P1838 Transmission Transfer Case Shift Motor Circuit Failure

P1846 Transmission Transfer Case Contact Plate 'A' Circuit Failure

P1850 Transmission Transfer Case Contact Plate 'B' Circuit Failure

P1854 Transmission Transfer Case Contact Plate 'C' Circuit Failure

P1858 Transmission Transfer Case Contact Plate 'D' Circuit Failure

P1866 Transmission Transfer Case System Concern - Servicing Required

P1867 Transmission Transfer Case Contact Plate General Circuit Failure

P1876 Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Failure

P1877 Transmission Transfer Case 2-Wheel Drive Solenoid Circuit Short To Battery

P1881 Engine Coolant Level Switch Circuit Failure, GEM

P1882 Engine Coolant Level Switch Circuit Short to Ground

P1883 Engine Coolant Level Switch Circuit Failure, GEM

P1884 Engine Coolant Level Lamp Circuit Short to Ground

P1891 Transmission Transfer Case Contact Plate Ground Return Open Circuit

P1900 Output Shaft Speed (OSS) Circuit Intermittent Malfunction

P1901 Turbine Shaft Speed (TSS) Circuit Intermittent Malfunction

P1902 Kickdown Solenoid Relay Control Circuit

P1903 Kickdown Solenoid Circuit Low Voltage

P1904 Kickdown Solenoid Circuit High Voltage

Back To Top Of Ford Check Engine Light Codes Page

Maniacmechanic1 · May 23, 2019

Something tells me someone we all know all has issues.

Cummins Diesel swap it.
A BBC.
A Vortech 350.
Olds V8.
Pontiac V8.
Pontiac V8 was stock in early GMC trucks 1957-1960.
Guys still talk about how good they are !

Grumpy · May 23, 2019

http://garage.grumpysperformance.com/index.php?threads/code-scanners-software.3096/#post-76192

http://garage.grumpysperformance.com/index.php?threads/odbii-scanners.9697/#post-36100

https://www.motor.com/magazine-summary/diagnosing-ford-misfires/

https://www.motorcraftservice.com/FreeResources/OBD

http://garage.grumpysperformance.co...your-c4-corvette-runs-badly.15212/#post-87228

http://garage.grumpysperformance.com/index.php?threads/multi-meters.3110/#post-71867

http://forum.grumpysperformance.com/viewtopic.php?f=36&t=63&p=3403&hilit=vats#p3403

http://www.totalcardiagnostics.com/...11/obd-ii-diagnostic-trouble-codes-dtc-manual

http://www.totalcardiagnostics.com/support/Knowledgebase/Article/View/64/11/obd2-code-lookup-tool

http://www.totalcardiagnostics.com/...ricmanufacturer-obd2-codes-and-their-meanings

http://garage.grumpysperformance.co...ignition-miss-in-the-engine.14591/#post-77679

http://garage.grumpysperformance.co...sing-a-crazy-electrical-glitch.986/#post-1738

http://garage.grumpysperformance.co...ntermitant-electrical-glitches.987/#post-2395

https://www.engine-light-help.com/lincoln-check-engine-light.html

https://www.engine-light-help.com/generic-check-engine-light-codes.html

https://www.engine-light-help.com/check-engine-light-domestic.html

https://www.engine-light-help.com/throttle-position-sensor.html

https://www.engine-light-help.com/check-engine-light-circuit-testing.html

https://www.amazon.com/dp/B07JFRFJG...1_7111482710101&aaxitk=2zN0CALYJjn-jWrQahY9vg

your job is to play detective and find the problems source.
the basic cause is almost always far easier to diagnose and cure than most owners of the cars would believe,
a scan tool A MULTI METER, a SHOP MANUAL,
A FUEL PRESSURE AND VACUUM GAUGE,
and pulling codes gives you a place to start,
but it requires you to go through a check list and ,
most people have the absurd concept ,
that you can diagnose and isolate the problem with out testing.
guessing does not generally work out, dealing in proven facts does

First Character - System The first character identifies identifies the system related to the trouble code. P = Powertrain B = Body C = Chassis U = Undefined Second Digit - Code Type The second digit identifies whether the code is a generic code (same on all OBD-II equpped vehicles), or a manufacturer specific code. 0 = Generic (this is the digit zero -- not the letter "O") 1 = Enhanced (manufacturer specific) Third Digit - Sub-System The third digit denotes the type of sub-system that pertains to the code 1 = Emission Management (Fuel or Air) 2 = Injector Circuit (Fuel or Air) 3 = Ignition or Misfire 4 = Emission Control 5 = Vehicle Speed & Idle Control 6 = Computer & Output Circuit 7 = Transmission 8 = Transmission 9 = SAE Reserved 0 = SAE Reserved Fourth and Fifth Digits These digits, along with the others, are variable, and relate to a particular problem. For example,a P0171 code means P0171 - System Too Lean (Bank 1). To lookup your particular code, visit our OBD Trouble Codes section.

Read more at: https://www.obd-codes.com/faq/obd2-codes-explained.php
Copyright OBD-Codes.com

infrared thermometers are a very useful tool to track down issues with tuning, or mal functioning sensors , without verified facts your guessing.
this is the most consistently accurate I.R temp gun I've used for testing[/img]

http://www.testequipmentdepot.com/e...1100200223789&utm_content=All Extech Products
INFRARED TEMP GUN
Wide temperature range from -58 to 1832Â°F (-50 to 1000Â°C)
any time that your dealing with a potential temperature issue or a trouble issue where , knowing the exact temperature vs what a gauge might say, it helps to have a handy and accurate infrared temp gun handy to locate and confirm heat, levels.

use of a shop manual and multi meter can be very helpful
http://www.totalcardiagnostics.com/toad/

https://www.autoenginuity.com/

http://www.ebay.com/gds/Automotive-Diagnostic-Software-Buying-Guide-/10000000177404580/g.html

Ive been playing with a friends scanner, for OBDII (1996 and newer cars)
it works with a down loaded app on your blue tooth comparable I-phone/I-pad without a connecting cord, it seems to work reasonably well
and its only $100.00 so its priced lower mid range

https://www.walmart.com/ip/BlueDriv...MI78GE4Pau3wIVRNbACh1niQWAEAYYAiABEgLg9_D_BwE

https://www.amazon.com/Bluetooth-Ad...t=&hvlocphy=9012039&hvtargid=pla-761431569272

http://www.amazon.com/ScanTool-4258...4?s=automotive&ie=UTF8&qid=1445959029&sr=1-24

http://www.amazon.com/ScanTool-4230...se_s_cp_3?ie=UTF8&refRID=0AY7FJ8EWKRKCRWRMPZ0

without testing you simply guessing
never guess, deal in verified FACTS!
guessing is a waste of time
think logically, isolate and test
yes IM aware some guys would rather dig out their eye with a red hot fork than to read links, but if you take the time to actually research the problem and isolate and test you,ll soon find the answers
well the first thing you do is pull trouble codes
and it would help if you purchased a shop manual.

Grumpy · May 23, 2019

OBD II Trouble Code Lists
Print

The first step is to read and record all trouble codes and Freeze Frame data - this information will be used during diagnosis. If the Reset function of the PCM is done first, all codes and related data will be lost!Look up the appropriate trouble code in the list on the following pages. This information includes the DTC number, Code Title and Conditions (the enable criteria that indicate conditions present when a code sets).

You can use this information to determine how to drive a vehicle to validate a repair procedure is complete. The enable criteria can be used to help diagnose a trouble code related to the AIR, Catalyst, CCM (component monitor), EGR or EVAP, Fuel and Misfire Monitors. The (1T) and (2T) designators in the first column indicate whether the code requires one or two "trips" to occur before the MIL is activated.

NOTE
In many cases, you will notice the same DTC for multiple applications. Be sure to check the year, make and model (and, in some cases, engine and VIN) when looking for a specific DTC. Dont assume that the first one you find is the only occurrence of that DTC.

OBD II Trouble Code List (P0XXX Codes)

P0016 1T CCM 2001-05 Ram Crankshaft/Camshaft Timing Misalignment Conditions: Engine cranking or running; and the PCM detected the camshaft was out of phase with the crankshaft during the CCM test period. Possible Causes: Base engine problem (i.e., the camshaft timing is not correct) Intermittent condition CKP or CMP Sensor signal is erratic (check with lab scope) Tone wheel or pulse wheel is damaged or contains debris CKP or CMP Sensor, harness or connector has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0031 1T CCM 2001-05 Ram O2 (B1 S1) Heater Circuit Low Conditions: Key on; system voltage over 10.6v; ASD relay on; O2 heater "on". The PCM detected the O2 Heater circuit is out of acceptable range low. Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed
P0032 1T CCM 2001-05 Ram O2 (B1 S1) Heater Circuit High Conditions: Key on; system voltage over 10.6v; ASD relay on; O2 heater "off". The PCM detected the O2 Heater circuit is out of range high. Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0037 1T CCM 2001-05 Ram O2 (B1 S2) Heater Circuit Low Conditions: Key on; system voltage over 10.6v; ASD relay on; O2 heater "on". The PCM detected the O2 Heater circuit is out of acceptable range (i.e., below 0.0926v). Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed
P0038 1T CCM 2001-05 Ram O2 (B1 S2) Heater Circuit High Conditions: Key on; system voltage over 10.6v; ASD relay on; O2 heater "off". The PCM detected the O2 heater voltage is out of range high. Possible Causes: O2 Sensor failed or improper operation O2 heater element is damaged or failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed
P0043 1T CCM 2001-03 Ram with 3.9L V6, 5.9L V8 & 8.0L V10 engine O2 (B1 S3) Heater Relay Circuit Low Conditions: Engine started; system voltage over 10.6v, ECT less within the test condition value, and the PCM detected the Post Catalyst O2 heater Relay circuit voltage remained too high. Possible Causes: O2 assembly is damaged or the O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed
P0044 1T CCM 2001-03 Truck models equipped with 3.9L V6, 5.9L V8 & 8.0L V10 engine O2 (B1 S3) Heater Relay Circuit High Conditions: Engine started; system voltage over 10.6v, ECT less within the test condition value, and the PCM detected the Post Catalyst O2 heater Relay circuit voltage remained too high. Possible Causes: O2 heater element is damaged, or the control circuit is open or shorted to power O2 heater ground circuit is open PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0051 1T CCM 2001-05 Ram O2 (B2 S1) Heater Relay Circuit Low Conditions: Key on, system voltage over 10.6v, ASD relay on, O2 heater "on", and the PCM detected the Heater Relay circuit Actual state did not match the Desired state (low circuit). 3 good trips are required to turn off the MIL. Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0052 1T CCM 2001-05 Ram O2 (B2 S1) Heater Relay Circuit High Conditions: Key on, system voltage over 10.6v, ASD relay on, O2 heater "off", and the PCM detected the Heater Relay circuit Actual state did not match the Desired state (high circuit). Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed
P0057 1T CCM 2001-05 Ram O2 (B2 S2) Heater Relay Circuit Low Conditions: Key on, system voltage over 10.6v, ECT input under test condition value, and the PCM detected the Heater Relay signal was too low. Possible Causes: O2 assembly is damaged or it has failed O2 heater element is damaged or has failed O2 heater control circuit is shorted to ground PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0058 1T CCM 2002-05 Ram O2 (B2 S2) Heater Relay Circuit High Conditions: Key on, system voltage over 10.6v, ASD powered up, and O2 heater is off. ECT input under test condition value and the PCM detected the Heater Relay signal was too high. Possible Causes: O2 heater element is damaged or the heater has failed O2 heater control circuit is open or it is shorted to power O2 heater ground circuit is open PCM has failed
P0068 1T CCM 2003-05 Ram MAP Sensor/TP Sensor Correction - High Flow/Vacuum Leak Conditions: Engine started; engine speed over 2000 rpm, and the PCM detected the Manifold Air Pressure (MAP) value dropped to less than 1.5" Hg with the throttle closed during the test. Possible Causes: An engine vacuum leak present High resistance in the MAP ground circuit, MAP Sensor signal or VREF (5v) circuit High resistance in the TP ground, TP circuit or the TP Sensor VREF (5v) circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0068 1T CCM 2004-05 Ram MAP Sensor/TP Sensor Correlation Conditions: Condition is monitored during all drive modes. This DTC will set when an unexpectedly high intake manifold airflow condition exists that can lead to increased engine speed and which then puts the Next Generation Controller into a High Airflow Protection Limiting Mode. This feature includes rpm limits whenever a TP and/or MAP Sensor limp-in fault is present. If vacuum drops below 1.5 in. Hg, with engine speed greater than 2000 rpm and closed throttle, this DTC will set. Possible Causes: An engine vacuum leak present High resistance in the 5v supply circuit 5v supply circuit is shorted to ground High resistance in the MAP signal circuit or the TP signal circuit TP signal circuit is shorted to ground High resistance in the Sensor ground circuit MAP Sensor is damaged or it has failed TP Sensor is damaged or it has failed PCM has failed
P0070 1T CCM 2001-03 Ram Ambient Temperature Sensor Circuit Stuck Conditions: Engine started 4 times, 4 warm-up cycles completed, vehicle driven for 200 miles, and the PCM did not detect more than a 6°F change in the Ambient Air Temperature (AAT) Sensor signal in the test. Possible Causes: AAT Sensor signal circuit shorted to power (VREF) AAT Sensor ground circuit is open AAT Sensor signal circuit is open AAT Sensor signal circuit is shorted to ground PCM High or Low circuit is damaged or it has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0071 2T CCM 2001-05 Ram Ambient Temperature Sensor Performance Conditions: Engine "off" time over 8 hours; DTC P0072 and P0073 not set; ambient temperature more than 38°F (4C). The PCM determined the Ambient Air Temperature (AAT) Sensor was not within calibrated temperature of the ECT and IAT Sensor signals after a cool down period. Possible Causes: AAT Sensor circuit open, shorted to ground or VREF AAT Sensor voltage below 1.0v AAT signal circuit is open or is shorted to ground, to battery voltage or to Sensor ground AAT Sensor ground circuit is open AAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed
P0072 1T CCM 2002-05 Ram Ambient Temperature Sensor Circuit Low Input Conditions: Related DTCs not set, key on or engine running; system voltage over 10.5v, at least 5 warm-up cycles completed, odometer mileage change at least 196.6 miles, and the PCM detected the AAT Sensor signal was less than 0.3v (0.78v: Jeep) at PCM. 3 good trips required to turn off MIL. Possible Causes: AAT Sensor internal failure AAT signal circuit shorted to ground AAT signal circuit shorted to Sensor ground PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0073 1T CCM 2002-05 Ram Ambient Temperature Sensor Circuit High Input Conditions: Key on or engine running; system voltage over 10.0v and the PCM detected the Ambient Air Temperature (AAT) Sensor signal was more than 4.9v for more than 2.8 seconds. Note that this code can be set due to an intermittent failure. 3 good trips are required to turn off the MIL. Possible Causes: AAT Sensor signal shorted to VREF (5v) or battery voltage AAT Sensor signal circuit or Sensor ground circuit is open AAT Sensor is damaged (it may be open) PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0106 1T CCM 2001-03 Ram BARO Out-Of-Range at Key On / MAP Sensor Low Conditions: Key on for less than 350 ms; engine speed less than 255 rpm, and the PCM detected the MAP Sensor input was less than 2.196v but more than 0.019v during a 300 ms period. Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is shorted, open or grounded Sensor signal circuit is open or shorted to ground Sensor has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0107 1T CCM 2001-03 Ram MAP Sensor Circuit Low Input Conditions: Engine speed from 416-1470 rpm; TP Sensor input less than 1v, and the PCM detected the MAP Sensor input was less than 2.35v at startup, or was less than 0.20v with the engine running (conditions met for 1.76 seconds). Possible Causes: Loss of 5-volt supply from PCM (internal failure) Sensor 5-volt supply circuit is open or shorted to ground Sensor signal circuit is shorted to ground Sensor or PCM has failed
P0107 1T CCM 2004-05 Ram MAP Sensor Circuit Low Input Conditions: Ignition on or engine from 600-3500 rpm (416-1500 rpm: Viper); TP Sensor input less than 1.2v (exc. Ram, Viper, Jeep), less than 0.8v (Ram, Jeep) or less than 1.13v (Viper). Battery voltage greater than 10v. MAP Sensor signal voltage was less than 0.782v for 1.7 seconds (exc. Dakota, Durango, Viper, Jeep) or less than 0.08v for 3 seconds (Dakota, Durango, Jeep), less than 0.1v for 2 seconds (Viper). If equipped, ETC light will flash. Possible Causes: 5-volt supply circuit is open or shorted to ground MAP Sensor signal circuit is shorted to ground or shorted to Sensor ground circuit MAP Sensor has failed PCM 5-volt supply circuit has failed
P0108 1T CCM 2004-05 Ram MAP Sensor Circuit High Input Conditions: Ignition on or engine speed from 600-3500 rpm (above 400 for Viper); TP Sensor input more than 1.2v, for more than 1.7 seconds; battery voltage over 10.0v. The PCM detected the MAP Sensor signal voltage (input) was over 4.92v (exc. Viper), or was greater than 4.88v at start or with engine running for 2.2 seconds (Viper). Possible Causes: MAP Sensor signal circuit is open MAP Sensor ground circuit is open MAP Sensor signal circuit shorted to 5-volt supply circuit or to battery voltage MAP Sensor has failed or it has failed (possible open circuit) MAP Sensor has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0108 1T CCM 2001-03 Ram MAP Sensor Circuit High Input Conditions: Engine speed from 416-1470 rpm with the throttle closed; and the PCM detected a MAP Sensor input of more than 4.6v (conditions met for 1 second). Possible Causes: MAP Sensor signal circuit is open MAP Sensor ground circuit is open MAP Sensor signal circuit shorted to VREF (5v) MAP Sensor has failed or it has failed (possible open circuit) PCM has failed
P0110 1T CCM 2002-03 Ram IAT Sensor Circuit High or Low Input Conditions: Key on for 60 seconds or right after startup; and the PCM detected an IAT Sensor input of 4.6v or less than 0.2v for 4 seconds. Possible Causes: IAT Sensor signal circuit is open, shorted to ground or to VREF IAT Sensor signal circuit has a high resistance condition IAT Sensor is damaged or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0111 1T CCM 2001-05 Ram IAT Sensor Performance Conditions: DTC P0112 and P0113 not set, key on, ECT Sensor input more than 160°F at startup, at least 5 warm-up cycles have occurred with vehicle mileage change of more than 196.6 miles, and the PCM detected the IAT input changed less than 5.4°F during this period. Possible Causes: IAT Sensor signal circuit is open, shorted to ground or VREF IAT Sensor ground circuit is open IAT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed
P0111 2T CCM 2004-05 Ram IAT Sensor Performance Conditions: Engine off. After calibrated amount of cool down (over 8 hours). PCM detects IAT Sensor is not within calibrated temperature amount of ECT Sensor and AAT Sensor. Engine time off when monitored is more than 8 hours and ambient temperature is more than 38F (4C). 3 good trips are required to turn off the MIL. Possible Causes: IAT Sensor signal circuit is open, shorted to ground, to Sensor ground, or to battery voltage IAT Sensor voltage is below 1.0v IAT Sensor ground circuit is open IAT Sensor is damaged or has failed PCM High or Low circuit is damaged or has failed
P0112 1T CCM 2001-05 Ram IAT Sensor Circuit Low Input Conditions: Ignition on or engine started; battery voltage greater than 10v. If the PCM detected an IAT Sensor input of less than 0.1v (Neon), 0.157v (Cirrus/Sebring, Stratus, Caravan/Town & Country) or less than 0.078v (Durango, Ram, Grand Cherokee) for 3 seconds, less than 0.8v (Viper), or less than 0.5v (Liberty) this DTC will set. Possible Causes: IAT Sensor signal circuit is shorted to chassis ground IAT Sensor signal circuit is shorted to Sensor ground IAT Sensor is damaged or it has failed (an internal short circuit) PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0113 1T CCM 2001-05 Ram IAT Sensor Circuit High Input Conditions: Check with ignition on or engine running; battery voltage more than 10v; The PCM detected the IAT Sensor input was over 4.90v (exc. Dakota, Durango, Ram) or 4.98v (Dakota, Durango, Ram) for 3 seconds. Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed
P0113 1T CCM 2001-03 Ram with 5.9L Diesel IAT Sensor Circuit High Input Conditions: Engine started; system voltage over 10.5v and the PCM detected the IAT Sensor input was more than 4.90v for 2 seconds. Possible Causes: IAT Sensor signal circuit shorted to VREF (5v) IAT Sensor signal circuit is open, or the ground circuit is open IAT Sensor is damaged or it has failed (an internal open circuit) PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0116 1T CCM 2001-03 Ram ECT Sensor Circuit Performance Conditions: Engine started; engine runtime over 10 minutes, and the PCM detected the ECT Sensor did not reach a calibrated level during the test period (i.e., it failed the CCM rationality test). Possible Causes: ECT Sensor signal circuit is open or it is shorted to ground ECT Sensor signal circuit is shorted to VREF (5v) ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed
P0116 2T CCM 2004-05 Ram ECT Sensor Circuit Performance Conditions: Engine off time is more than 8 hours; ambient temperature is more than 38F (4C); and after a calibrated amount of cool-down time, the PCM compares the ECT Sensor, IAT Sensor and AAT Sensor values; if ECT Sensor is not within a calibrated temperature amount of the other 2 Sensors, an error is detected. 3 good trips are required to turn off the MIL. If equipped, the ECT light will also illuminate when the MIL illuminates. Possible Causes: ECT Sensor signal circuit is open or it is shorted battery voltage or to ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor ground circuit is open ECT Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed
P0117 1T CCM 2001-05 Ram ECT Sensor Circuit Low Input Conditions: Ignition on or engine started. The PCM detected the ECT Sensor input voltage was below 0.51v (95-03) or 0.1v (04-05, exc. Grand Cherokee, Liberty), less than 0.5v (04-05 Liberty), less than 0.78v (Grand Cherokee), or below 0.8v (Viper) for 3 seconds. Possible Causes: ECT Sensor signal circuit is shorted to chassis ground ECT Sensor signal circuit is shorted to Sensor ground ECT Sensor is damaged or it has failed (it may be shorted) PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0121 1T CCM 2004-05 Ram TP Sensor No. 1 Does Not Agree With MAP Conditions: Ignition is on and no MAP Sensor DTCs are set. The PCM determines the TP Sensor signals do not correlate with the MAP Sensor signal. The ECT light will illuminate. DTC P2135 should also set with this DTC. Possible Causes: TP Sensor No. 1 signal circuit shorted to battery voltage Resistance in either TP Sensor No. 1 or 2 signal circuit, 5v supply circuit or TP Sensor return circuit TP Sensor No. 1 signal circuit shorted to group or to TP Sensor No. 2 signal circuit 5v supply circuit shorted to ground TP Sensor or throttle body damaged or failed PCM has failed
P0121 1T CCM 2001-03 Ram with 5.9L Diesel Accelerator Position Sensor Signal Does Not Agree With IVS: Engine running at idle speed (throttle indicating less than 15% open) for 1 second or running at off-idle with the VSS input indicating over 10 mph for 1 second, and the PCM detected the IVS indicated idle when the APPS signal indicated off-idle, or the IVS indicated off-idle when the APPS indicated the engine was at idle position. Possible Causes: APP Sensor signal circuit open APP Sensor signal circuit shorted to voltage (IVS 2 circuit) APP Sensor short to vehicle power APP Sensor is damaged or it has failed PCM has failed

OBD II Trouble Code List (P0XXX Codes) Continued

P0122 1T CCM 2001-03 Ram TP Sensor Circuit Low Input Conditions: Key on or engine running; system voltage over 10.5v and the PCM detected the TP Sensor was less than 0.10v, condition met for 1.3 seconds. Possible Causes: Sensor 5-volt supply circuit open or shorted to ground Sensor signal circuit is shorted to ground TP Sensor is damaged or it has failed PCM has failed
P0122 1T CCM 2001-03 Ram with 5.9L Diesel Accelerator Position Sensor Circuit Low Conditions: Engine started; and the PCM detected the APPS signal was to low, or the APPS signal between the ECM and the Powertrain Control Module (PCM) was too low at any time. Possible Causes: APP Sensor 5-volt supply circuit open or shorted to ground APP Sensor signal shorted to ground APP Sensor is damaged or it has failed PCM has failed
P0122 1T CCM 2004-05 Ram TP Sensor No. 1 Circuit Low Input Conditions: Key on; system voltage over 10v; and the PCM detected the TP Sensor indicated less than 0.16v for 0.7 second (300M, Magnum, Liberty), 0.078v (Pacifica, PT Cruiser), or 0.0978v (Neon, Sebring, Stratus) or 0.1v (Viper). 3 good trips are required to turn off the MIL. If equipped, the ETC light will illuminate. Possible Causes: TP Sensor sweep Intermittent condition 5v supply circuit open or shorted to ground TP Sensor No. 1 signal circuit shorted to ground or to Sensor return circuit TP Sensor or throttle body damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) Continued

P0122 1T CCM 2004-05 Ram TP Sensor No. 1 Circuit Low Input Conditions: Key on; system voltage over 10.4v. The PCM detected the TP Sensor voltage is less than 0.0978v for 1.3 seconds (3.7L, 4.7L), or less than 0.16v for 0.7 second (5.7L). 3 good trips are required to turn off the MIL. If equipped, the ETC light will illuminate. Possible Causes: 5v supply circuit open or shorted to ground TP Sensor No. 1 signal circuit shorted to ground or to Sensor ground circuit TP Sensor has failed Throttle body is damaged PCM has failed
P0123 1T CCM 2004-05 Ram TP Sensor/APPS Circuit High Input Conditions: Key on or engine running; system voltage over 10v. The PCM detected the TP Sensor indicated more than 4.47v (Neon, Sebring, Stratus, Viper, Liberty) or 4.94v (all other models) for 0.48 second. If equipped, ETC light will illuminate. Possible Causes: Related TP Sensor engine DTCs present Intermittent wiring or connector problem TP signal circuit is open or is shorted to battery voltage or to 5v supply circuit TP sensor has failed TP sensor ground circuit is open PCM has failed
P0123 1T CCM 2001-03 Ram with 5.9L Diesel Accelerator Position Sensor Circuit High Conditions: Engine started; and the PCM detected the APPS signal was too high, or the APPS signal between the Engine Control Module (ECM) and the Powertrain Control Module (PCM) was too high at any time. Possible Causes: APP Sensor circuit is open, or Sensor ground circuit is open APP Sensor signal shorted to power APP Sensor has failed or the PCM has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) Continued

P0123 1T CCM 2001-03 Ram Throttle Position Sensor No. 1 Circuit High Conditions: Ignition is on; battery voltage is more than 10.4v. The PCM detected the TP Sensor voltage is more than 4.47v for 1.3 seconds (3.7L, 4.7L) or more than 4.8v for 25ms (5.7L). If equipped, the ETC light will illuminate. Possible Causes: TP Sensor No. 1 circuit is open, or is shorted to battery voltage TP Sensor No. 1 signal circuit is shorted to 5v supply circuit TP Sensor ground circuit is open TP Sensor has failed Throttle body is damaged (5.7L) Throttle plate is jammed against the maximum stop (5.7L) PCM has failed
OBD II Trouble Code List (P0XXX Codes) Continued

P0125 2T CCM 2004-05 Ram Closed Loop Temperature Not Reached Conditions: Engine running; battery over 10v. Engine temperature does not enable closed loop. Failure time depends on start-up coolant temperature and ambient temperature (i.e., 2 minutes for a start temperature of 50°F (10C), or up to 10 minutes for a vehicle with start-up temperature of -18F (-28C). Possible Causes: Low coolant level Improper thermostat operation or thermostat failure ECT has failed
P0125 2T CCM 2001-03 Ram with 5.9L Diesel Engine Does Not Reach Closed Loop Conditions: DTC P0112, P0113, P0117, P0118, P1492 and P1493 not set, key on, IAT Sensor signal less than -80°F, system voltage over 10.4v, and the PCM detected the ECT Sensor was more than 140°F, or with the ECT Sensor between -40°F and 150°F at startup, or it detected the ECT Sensor did not change more than 6°F after 10 minutes. Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor is damaged or it is out-of-calibration Inspect for low coolant level or for an incorrect coolant mixture
OBD II Trouble Code List (P0XXX Codes) Continued

P0128 2T CCM 2004-05 Ram Thermostat Rationality Test Conditions: With engine running after cold start. PCM predicts a coolant temperature value that it will compare to the actual coolant temperature. If the 2 coolant temperature values are not within 50°F (10°C) of each other, an error is detected. Possible Causes: Low coolant level Thermostat has failed Signal circuit shorted to battery voltage ECT Sensor has failed or voltage is below 1.0v Signal circuit is open, shorted to ground or shorted to Sensor ground ECT Sensor ground circuit or signal circuit is open PCM has failed
P0129 1T CCM 2001-05 Ram Barometric Pressure Out-Of-Range Conditions: Engine cranking at less than 250 rpm; no CKP or CMP Sensor signals within 75ms. The PCM detected the MAP/BARO Sensor signal range was 0.04-2.2v for 300ms during testing. If equipped, the ETC lamp will be illuminated. 3 good trips are required to turn off the MIL. Possible Causes: IAC motor control low or control high circuit has failed MAP Sensor VREF (5v) circuit is open or shorted to ground MAP Sensor signal circuit is open or shorted to ground MAP Sensor is damaged or it has failed May be an intermittent condition PCM has failed
OBD II Trouble Code List (P0XXX Codes) Continued

P0131 2T CCM 2004-05 Ram O2 (B1 S1) Circuit Short to Ground Conditions: Engine running; cold start. O2 Sensor signal voltage is below 2.402v for 9 seconds (exc. Durango, Grand Cherokee, Liberty, Ram, Viper), or below 2.52v for 6 seconds (Durango, Grand Cherokee, Liberty, Ram), or below 0.156v for 28 seconds (Viper). Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 return circuit is shorted to ground or to signal circuit O2 signal circuit is shorted to O2 return upstream circuit O2 may be contaminated or it has failed PCM has failed
P0131 1T CCM 2001-03 Ram O2 (B1 S1) Circuit Short to Ground Conditions: Engine running with ECT Sensor over 146°F, followed by an engine off period in which the O2 heater Test ran and passed, then after an engine cool-down period, and a cold engine startup (ECT Sensor under 100°F and the BTS signal within 44°F of the ECT Sensor), the PCM detected the O2 signal was less than 78 mV for 5 seconds. Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) Continued

P0132 1T CCM 2001-03 Ram O2 (B1 S1) Circuit Short to Voltage Conditions: Engine started; engine runtime over 119 seconds, system voltage over 10.99v, O2 heater temperature over 1085°F and the PCM detected the O2 input was over 3.70v for 1 minute. Possible Causes: O2 signal tracking (wet/oily) in connector causing a short between the signal and heater power circuits O2 ground circuit is open O2 signal circuit is open PCM has failed
P0132 1T CCM 2004-05 Ram O2 Sensor (B1 S1) Voltage High Engine started; battery voltage above 10.4v; O2 Sensor heater temperature is more than 925F (496C). O2 Sensor is more than 3.7v for 40 seconds. 3 good trips are required to turn the MIL off. Possible Causes: O2 Sensor signal circuit and/or return circuit shorted to voltage O2 Sensor has failed O2 Sensor signal or return circuit open PCM has failed
OBD II Trouble Code List (P0XXX Codes) Continued

P0133 2T O2 2001-03 Ram O2 (B1 S1) Slow Response Conditions: Engine runtime over 2 minutes, ECT Sensor more than 147°F, VSS over 10 mph, A/C and PSPS indicating off, then at idle speed in Drive (A/T) or Neutral (M/T), and the PCM detected the O2 signal did not switch enough times from 270-620 mV in the test period. Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed
P0133 2T O2 2004-05 Ram O2 (B1 S1) Slow Response Conditions: Vehicle driven at speeds between 20-55 mph, with throttle open for minimum of 120 seconds; coolant temperature is greater than 158F (70C); catalytic converter temperature is greater than 1112F (600C); EVAP purge is active. The PCM detects the O2 Sensor signal voltage switches less than 16 times from lean to rich with 20 seconds during monitoring. 3 good trips are required to turn off MIL. Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal circuit or upstream circuit has failed O2 element has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0135 2T CCM 2004-05 Ram O2 (B1 S1) Heater Circuit Conditions: Engine running and O2 heater duty cycle is greater than 0%; battery voltage is more than 11v. No O2 sensor output signal is received when the PCM powers up the sensor heater. 3 good trips are required to turn off the MIL. Possible Causes: O2 heater ground circuit open or heater control circuit is open O2 heater element has failed PCM has failed
P0136 1T CCM 2001-03 Ram O2 (B1 S2) Heater Circuit Low Input Conditions Key on, cold engine conditions, system voltage over 10.5v, ASD relay on, and the PCM detected the Actual state of the Heater relay circuit did not match the Intended state (i.e., the circuit status remained in a low state). Possible Causes: Fused ignition feed (power) circuit to the relay is open Heater relay control circuit is open Heater relay or PCM has failed
P0137 1T CCM 2001-03 Ram O2 (B1 S2) Circuit Short to Ground Conditions: ECT Sensor over 170°F at previous key off, O2 heater Test completed, engine cool down period finished, engine started, ECT Sensor less than 98°F and BTS signal within 27°F of the ECT Sensor, and PCM detected the O2 signal was below 156 mV for 28 seconds. Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0137 1T CCM 2004-05 Ram O2 (B1 S2) Sensor Circuit Low Conditions: Engine running; battery voltage over 10.9v; O2 heater temperature below 484°F (251C) or ECT above 170F from previous key off. The PCM detected the O2 Sensor signal voltage was less than 1.5v for 3 seconds (300M, Magnum), less than 2.402v for 9 seconds (Neon, Sebring, Stratus, PT Cruiser, Caravan, Town & Country, Liberty), or 2.5194v for 3 seconds (Durango, Ram), or less than 0.156v for 28 seconds (Viper). Possible Causes: O2 return circuit is shorted to ground O2 signal circuit is shorted to ground, or to O2 return circuit, or O2 heater ground circuit O2 Sensor has failed PCM has failed
P0138 1T CCM 2001-03 Ram O2 (B1 S2) Circuit Short to Voltage Conditions: Engine started; engine runtime more than 4 minutes, system voltage over 10.5v, ECT Sensor more than 180°F, and the PCM detected the O2 signal was more than 1.50v for 3 seconds. Possible Causes: O2 signal tracking (wet/oily) in connector due to short from signal to power circuit O2 signal circuit is open O2 ground circuit is open O2 is damaged or it has failed PCM has failed
P0138 2T CCM 2004-05 Ram O2 (B1 S2) Sensor Voltage High Condition: Engine runtime for 119 seconds; O2 Sensor heater temperature is more than 662°F (350°C); Battery voltage more than 10.99v. O2 Sensor voltage is above 3.7v for 60 seconds (300M, Magnum, Pacifica), or 3.99v for 60 seconds (PT Cruiser, Sebring, Stratus), above 3.9902v for 30 seconds (Neon, Caravan, Dakota, Durango, Grand Cherokee, Ram, Town & Country, Voyager, Wrangler), or above 3.99v for 76.8 seconds (Liberty). Possible Causes: O2 Sensor signal circuit or return circuit shorted to voltage O2 Sensor has failed O2 Sensor signal circuit or return circuit open PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0139 1T CCM 2001-03 Ram O2 (B1 S2) Slow Response Conditions: Engine started; vehicle driven at 20-55 mph with the throttle open for 2 minutes, ECT Sensor more than 158°F, Converter temperature over 1112°F, EVAP purge "on", and the PCM detected the O2 signal switched from rich-to-lean less than 11 times in 20 seconds. Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is contaminated, deteriorated or it has failed O2 ground or O2 signal circuit has high resistance
OBD II Trouble Code List (P0XXX Codes) - Continued

P0139 2T O2 2004-05 Ram O2 (B1 S2) Slow Response Conditions: Engine started; vehicle driven at 20-55 mph with the throttle open for 2 minutes; ECT at more than 158°F (70C); catalytic converter temperature is more than 1112F (600C); and EVAP purge is active. O2 Sensor signal voltage switches less than 16 times from lean to rich within 20 seconds during monitoring, or will compare the state of change between the front and rear O2 Sensors and if the differences are greater than a calibrated amount, the DTC will set. 3 good trips are required to turn off the MIL. Possible Causes: Exhaust leak O2 element is contaminated, deteriorated or it has failed O2 signal circuit or return circuit has failed
P0140 2T O2 2001-03 Ram O2 (B1 S2) Remains At Center Conditions: Engine started; system voltage over 10.5v, ECT Sensor over 150.8°F, engine running in closed loop, and the PCM detected the O2 signal was fixed at 350-580 mV for 60 seconds. Possible Causes: Exhaust leak present in exhaust manifold or exhaust pipes O2 element is fuel contaminated or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0141 1T CCM 2001-03 Ram O2 (B1 S2) Heater Circuit Conditions: ECT Sensor less than 147°F, BTS signal within 27°F of ECT Sensor (cold engine); engine running at idle speed for over 12 seconds, system voltage over 10.5v and the PCM detected the O2 signal was more than 3.0v for 30-90 seconds. Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed
P0141 2T CCM 2004-05 Ram O2 (B1 S2) Heater Circuit Conditions: Engine running and O2 heater duty cycle is greater than 0%. O2 heater temperature does not reach 959F (575C), exc. 300M, Magnum, or 662F (350C), all other models, within 90 seconds (45 seconds for Sebring, Stratus), or no O2 Sensor output is received when the PCM attempts to power up the Sensor heater. 3 good trips are required to turn off the MIL.Possible Causes: O2 heater ground circuit open or O2 signal circuit is open O2 heater element has failed O2 heater ground circuit or control circuit is open PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0143 1T CCM 2001-02 Ram with 5.9L or 8.0L (CA models) O2 (B1 S3) Short to Ground Conditions: ECT Sensor more than 170°F on previous key on, ECT Sensor less than 98°F and the BTS signal within 59°F of the ECT Sensor at startup (cold engine), and the PCM detected the O2 signal was less than 156 mV for 28 seconds. Possible Causes: O2 signal circuit is open or is shorted to chassis or Sensor ground O2 signal circuit is open (circuit reads 450 mV when open) O2 may be contaminated or it has failed
P0144 1T CCM 2001-02 Ram with 5.9L or 8.0L (CA models) O2 (B1 S3) Short to Voltage Conditions: Engine runtime over 2 minutes, ECT Sensor more than 180°F, and the PCM detected the O2 signal was more than 1.50v. Possible Causes: O2 signal tracking in connector due to a short between the signal and power circuits O2 signal circuit shorted to system power O2 signal circuit open, or ground circuit open O2 heater supply circuit is open PCM has failed
P0145 2T O2 2001-02 Ram with 5.9L or 8.0L (CA models) O2 (B1 S3) Slow Response Conditions: Engine started; ECT Sensor more than 170°F, VSS input over 10 mph with throttle open for 2 minutes, then back to idle speed in Drive (A/T) or Neutral (M/T), and the PCM detected the O2 signal did not switch enough times from 270-620 mV during the O2 Test. Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated or the O2 element is deteriorated PCM has failed
P0147 1T CCM 2001-02 Ram with 5.9L or 8.0L (CA models) O2 (B1 S3) Heater Fault Conditions: ECT Sensor less than 147°F, BTS signal within 27°F of ECT Sensor (cold engine), engine running at idle speed for over 12 seconds, system voltage over 10.5v and the PCM detected the O2 signal was more than 3.0v for 30-90 seconds. Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0151 1T CCM 2001-03 Ram O2 (B2 S1) Circuit Short to Ground Conditions: ECT Sensor more than 170°F on previous key on, ECT Sensor less than 98°F and the BTS signal within 27°F of the ECT Sensor at startup (cold engine), and the PCM detected the O2 signal was less than 156 mV for 28 seconds. Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 signal circuit is open (circuit reads 450 mV when open) O2 ground circuit is open (circuit reads 170 mV when open) O2 may be contaminated or it has failed PCM has failed
P0151 1T CCM 2004-05 Ram O2 (B2 S1) Circuit Short to Ground Conditions: Engine runtime under 30 seconds, system voltage over 10.99v, O2 heater temperature below 484°F. The PCM detected the O2 signal was below 1.5v (300M, Magnum, Sebring, Stratus) or below 2.5196v (Dakota, Durango, Grand Cherokee, Ram, Wrangler) for 3 seconds, or below 2.411v for 10 seconds (Liberty) after engine start. Possible Causes: O2 upstream circuit is shorted to ground O2 signal circuit is shorted to ground or to O2 upstream return circuit O2 signal circuit is shorted to the heater ground circuit O2 may be contaminated or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0152 1T CCM 2001-03 Ram O2 (B2 S1) Short to Voltage Conditions: Engine runtime over 4 minutes, system voltage over 10.5v, ECT Sensor more than 180°F, and the PCM detected the O2 signal was more than 1.50v for 3 seconds during the CCM test. Possible Causes: O2 signal tracking in connector due to wet/oily conditions O2 ground circuit is open O2 heater supply circuit is open O2 signal circuit is open O2 element is damaged or it has failed PCM has failed
P0152 1T CCM 2004-05 Ram O2 (B2 S1) Circuit High Conditions: O2 Sensor heater temperature is more than 925F (496C) on 300M, Magnum or 1085F (350C) on Sebring; battery voltage is more than 10.99v. O2 Sensor voltage is more than 3.7v for 30 seconds (300M, Magnum), more than 3.99v for 30 seconds (Dakota, Durango, Grand Cherokee, Ram, Wrangler), 3.99v for 60 seconds (Sebring, Stratus), or 3.99v for 66.56 seconds (Liberty). 3 good trips are required to turn off the MIL. Possible Causes: O2 signal circuit is open or is shorted to battery voltage. O2 upstream return circuit is open or is shorted to battery voltage O2 Sensor is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0153 1T CCM 2001-03 Ram O2 (B2 S1) Slow Response Conditions: Engine started; ECT Sensor more than 147°F, VSS input over 10 mph with throttle open for 2 minutes, then back to idle speed in Drive (A/T) or Neutral (M/T), and the PCM detected the O2 signal did not switch enough from 270-620 mV during the O2 Test. Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed
P0153 2T CCM 2004-05 Ram O2 (B2 S1) Slow Response Conditions: Engine started; vehicle driven at a steady speed of 20-55 mph with the throttle open for at least 2 minutes, ECT Sensor more than 158°F (70C), Catalytic Converter temperature more than 1112°F (600C), EVAP purge is active, and the PCM detected the O2 signal switched from lean to rich less than 16 times (3.5L, 3.7L, 4.7L, 5.7L) or 11 times (2.7L) within a 20 second period during monitoring. 3 good trips are required to turn off MIL. Possible Causes: Exhaust leak O2 signal circuit has an open or grounded condition O2 upstream return circuit has an open or grounded condition O2 element is deteriorated or it has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0154 1T CCM 2001-03 Ram O2 (B2 S1) Remains At Center Conditions: Engine started; ECT Sensor more than 147°F, VSS input over 10 mph with throttle open for 2 minutes, then back to idle speed in Drive (A/T) or Neutral (M/T), and the PCM detected the O2 signal did not switch enough from 270-620 mV during the O2 Test. Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 signal or ground circuit has a high resistance condition O2 element is fuel contaminated O2 element is deteriorated or it has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0155 1T CCM 2001-03 Ram O2 (B2 S1) Heater Circuit Conditions: ECT Sensor less than 147°F, BTS signal within 27°F of ECT Sensor (cold engine), engine running at idle speed for over 12 seconds, system voltage over 10.5v and the PCM detected the O2 signal was more than 3.0v for 30-90 seconds. Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit open or O2 signal circuit is open O2 heater element has high resistance O2 heater element has failed (open or shorted) PCM has failed
P0155 2T CCM 2004-05 Ram O2 (B2 S1) Heater Circuit Conditions: Engine running and heater duty cycle is greater than 0%; battery voltage is more than 11v. O2 heater temperature does not reach 959F (575C) within 90 seconds, or no Sensor output is received when the PCM powers up the Sensor heater. 3 good trips required to turn off MIL. Possible Causes: O2 heater control circuit is open O2 heater ground circuit is open O2 heater element is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0157 1T CCM 2001-03 Ram O2 (B2 S2) Circuit Shorted to Ground Conditions: ECT Sensor more than 170°F at previous key off, O2 heater Test completed after shutdown, engine cool-down period completed, then engine started, ECT Sensor less than 98°F and the BTS signal within 27°F of the ECT Sensor (cold engine), and the PCM detected the O2 signal was less than 156 mV for 28 seconds during the test. Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 may be contaminated or it has failed PCM return or signal circuit is damaged or has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0157 1T CCM 2004-05 Ram O2 (B2 S2) Circuit Low Conditions: Engine runtime under 30 seconds; system voltage over 10.99v; O2 heater temperature below 484°F (251°C); O2 Sensor signal was less than 1.5v (300M, Magnum, Viper) or less than 2.5196v (Durango, Grand Cherokee, Ram, Wrangler) for 3 seconds (28 seconds: Viper), or below 2.411v for 10 seconds (Liberty) after engine start. 3 good trips are required to turn off the MIL. Possible Causes: O2 signal circuit is shorted to chassis or Sensor ground O2 is damaged or it has failed PCM has failed
P0158 1T CCM 2001-03 Ram O2 (B2 S2) Circuit Shorted to Ground Conditions: Engine runtime over 4 minutes, system voltage over 10.5v, ECT Sensor more than 180°F, and the PCM detected the O2 signal was more than 1.50v, condition met for 3 seconds. Possible Causes: O2 signal tracking due to wet/oily condition in the connector O2 signal circuit is open or shorted to system power O2 is damaged or is has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0158 1T CCM 2004-05 Ram O2 (B2 S2) Circuit High Conditions: Engine is running; system voltage over 10.99v; O2 heater temperature more than 925°F (496°C) on all exc. Sebring, Stratus, or more than 1085F (350C) on Sebring, Stratus. The PCM detected the O2 signal was more than 3.70v for 30 seconds (300M, Magnum), more than 3.99v for 30 seconds (Dakota, Durango, Grand Cherokee, Ram, Wrangler), more than 3.99v for 60 seconds (Sebring, Stratus), or more than 3.99v for 76.8 seconds (Liberty). 3 good trips required to turn off MIL. Possible Causes: O2 signal circuit is open or is shorted to battery O2 downstream return circuit is open or is shorted to battery O2 is damaged or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0159 2T O2 2004-05 Ram O2 (B2 S2) Slow Response Conditions: Engine is driven at 20-55 mph with throttle open for 2 minutes; ECT Sensor over 158°F (70C); catalytic converter temperature over 1112°F (600C); EVAP purge is active. The O2 Sensor signal voltage switches less than 16 times or 11 times (2.7L exc. Liberty) from lean to rich with 20 seconds during monitoring. 3 good trips required to turn off MIL. Possible Causes: Exhaust leak O2 signal circuit is open or shorted O2 downstream return circuit is open or shorted O2 Sensor is damaged or has failed
P0159 2T O2 2001-03 Ram O2 (B2 S2) Slow Response Conditions: Engine started; ECT Sensor more than 170°F, VSS input over 10 mph with throttle open for 2 minutes, then back to idle speed in Drive (A/T) or Neutral (M/T), and the PCM detected the O2 signal did not switch enough times from 270-620 mV during the O2 Test. Possible Causes: Exhaust leak present in the exhaust manifold or exhaust pipes O2 element is fuel contaminated O2 element is deteriorated or it has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0161 1T CCM 2001-03 Ram O2 (B2 S2) Slow Response Conditions: ECT Sensor less than 147°F and BTS signal within 27°F of the ECT Sensor (cold engine), engine started, system voltage over 10.5v, engine running at idle speed for over 12 seconds, and the PCM detected the O2 signal was more than 3.0v for 30-90 seconds. Possible Causes: ASD relay output (power) circuit to the heater is open O2 heater ground circuit is open or O2 signal circuit open O2 heater element has high resistance, is open or shorted PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0161 2T CCM 2004-05 Ram O2 (B2 S2) Heater Performance Conditions: Engine running; heater duty cycle is greater than 0%; battery voltage is more than 11v. O2 heater temperature does not reach 662F (350C) within 90 seconds, or no Sensor output is received when the PCM powers up Sensor heater. 3 good trips required to turn off MIL. Possible Causes: O2 heater control circuit or ground circuit is open O2 Sensor heater element is damaged or has failed PCM has failed
P0165 1T CCM 2001-03 Ram Starter Relay Circuit Conditions: Engine cranking and the PCM did not detect the correct voltage signal from the Starter relay control circuit. Possible Causes: Starter Relay control circuit is open Starter Relay Control circuit is grounded PCM has failed
P0168 1T CCM 2001-03 Ram with 5.9L Diesel Decreased Performance (High Injection Pump Fuel Temperature) Conditions: Engine started. The PCM detected decreased performance from the Injector Pump due to a high injection fuel pump temperature. Possible Causes: Fuel Injection pump module has failed Overflow Valve Test failed
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0171 2T Fuel 2001-03 Ram Fuel System Lean (Bank 1) Conditions: Engine running in closed loop, ambient temperature over 20°F, altitude less than 8,000 feet, and the PCM detected too large an amount of Fuel Trim correction due to a lean A/F condition. Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose
P0171 2T Fuel 2001-03 Ram Fuel System Lean (Bank 1) Conditions: Engine running in closed loop; IAT Sensor signal over 20°F; altitude less than 8,000 feet. The PCM detected too large an amount of Fuel Trim correction due to a lean A/F condition. Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose
OBD II Trouble Code List (P0XXX Codes) - Continued

P0171 2T Fuel 2004-05 Ram Fuel System Lean (B1 S1) Conditions: Engine running in closed loop. AAT Sensor signal over 20°F (-7C). Altitude less than 8,500 feet. Fuel level greater than 15%. If PCM multiplies short-term compensation by long-term adaptive and a certain percentage is exceeded for 2 trips, a freeze frame is stored, the MIL illuminates, and a DTC is stored. Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged or fuel pump has failed O2 Sensor has failed O2 signal circuit or return circuit has failed O2 Sensor heater operation is faulty TP Sensor sweep has failed MAP Sensor operation has failed ECT Sensor operation has failed Engine mechanical problem is present Fuel is contaminated Exhaust leak exists
P0172 2T Fuel 2001-03 Ram Fuel System Rich (Bank 1) Conditions: Engine running in closed loop, IAT Sensor signal over 20°F, altitude less than 8,000 feet, and the PCM detected too large an amount of Fuel Trim correction due to a rich A/F condition. Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system failure (e.g., canister full of fuel) Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (injector leak, high fuel pressure) O2 element is contaminated, deteriorated or it has failed O2 heater is damaged or it has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0172 2T Fuel 2001-03 Ram Fuel System Rich (Bank 1) Conditions: Engine running in closed loop, IAT Sensor signal over 20°F, altitude less than 8,000 feet, and the PCM detected too large an amount of Fuel Trim correction due to a rich A/F condition. Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system has failed (canister full of fuel) Fuel injector (one or more) leaking or pressure regulator leaking O2 element is deteriorated or has failed
P0172 2T Fuel 2004-05 Ram Fuel System (S1 B1) Rich Conditions: Engine running in closed loop. IAT Sensor signal over 20°F (-7C). Altitude less than 8,500 feet. PCM multiplies short-term compensation by long-term adaptive, as well as a purge fuel multiplier, and the result is below a certain value for 30 seconds over 2 trips, a freeze frame is stored. MIL illuminates and DTC is stored. Possible Causes: O2 Sensor heater or O2 Sensor has failed EVAP purge solenoid failed or improper operation O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair PCM has failed
P0174 2T Fuel 2001-03 Ram Fuel System Lean (Bank 2) Conditions: Engine running in closed loop, IAT Sensor signal over 20°F, altitude less than 8,000 feet, and the PCM detected too large an amount of Fuel Trim correction due to a lean A/F condition. Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose
OBD II Trouble Code List (P0XXX Codes) - Continued

P0174 2T Fuel 2001-03 Ram Fuel System Lean (Bank 2) Conditions: Engine running in closed loop, IAT Sensor signal over 20°F, altitude less than 8,000 feet, and the PCM detected too large an amount of Fuel Trim correction due to a lean A/F condition. Possible Causes: Air leaks in intake manifold, exhaust pipes or exhaust manifold Base engine mechanical problem causing a lean A/F condition Fuel control Sensor is out of calibration (e.g., ECT, IAT or MAP) Fuel delivery component fault (clogged filter, low fuel pressure) O2 element is contaminated, deteriorated or it has failed Vacuum hose is disconnected, broken, leaking or loose
P0174 2T Fuel 2004-05 Ram Fuel System (S2 B1) Lean Conditions: Engine running in closed loop. IAT Sensor signal over 20°F (-7C). Altitude less than 8,500 feet. PCM multiplies short-term compensation by long-term adaptive, and a certain percentage is exceeded in 2 trips, a freeze frame is stored. MIL illuminates and DTC is stored. 3 good trips required to turn off MIL. Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged Fuel pump is damaged or has failed O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair O2 Sensor has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0175 2T Fuel 2001-03 Ram Fuel System Rich (Bank 2) Conditions: Engine running in closed loop, IAT Sensor signal over 20°F, altitude less than 8,000 feet, and the PCM detected too large an amount of Fuel Trim correction due to a rich A/F condition. Possible Causes: Base engine fault (i.e., cam timing incorrect, oil level too high) EVAP vapor recovery system has failed (canister full of fuel) Fuel injector (one or more) leaking or pressure regulator leaking O2 element is deteriorated or has failed
P0175 2T Fuel 2004-05 Ram Fuel System (S2 B1) Rich Conditions: Engine running in closed loop. IAT Sensor signal over 20°F (-7C). Altitude less than 8,500 feet. If the PCM multiplies short-term compensation by long-term adaptive, and a purge fuel multiplier, and the result is below a certain value for 30 seconds in 2 trips, a freeze frame is stored. MIL illuminates and DTC is stored. 3 good trips required to turn off MIL. Possible Causes: Restricted fuel supply line Fuel pump inlet strainer plugged Fuel pump is damaged or has failed O2 signal circuit or return circuit has failed MAP Sensor has failed or circuit malfunction ECT Sensor has failed or circuit malfunction Engine mechanical problem Fuel filter/pressure regulator has failed or needs repair O2 Sensor has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0177 1T CCM 2001-03 Ram with 5.9L Diesel Water In Fuel Signal Circuit Fault Conditions: Key on. The PCM detected the Water In Fuel (WIF) Sensor signal was out of range low. Possible Causes: Water In Fuel Sensor has detected water in the fuel supply (drain the water from the fuel filter and then retest for the code) Water In Fuel Sensor signal circuit shorted to Sensor ground Water In Fuel Sensor signal circuit shorted to chassis ground PCM has failed
P0178 1T CCM 2001-03 Ram with 5.9L Diesel Water in Fuel Sensor Low Input Conditions: Key on, and the PCM detected the Water In Fuel (WIF) Sensor signal was less than 0.51v. Possible Causes: Water In Fuel Sensor signal circuit shorted to Sensor ground Water In Fuel Sensor signal circuit shorted to chassis ground Water In Fuel Sensor has failed PCM has failed
P0180 1T CCM 2001-03 Ram with 5.9L Diesel Fuel Injection Pump Temperature Out-Of-Range Conditions: Engine started; and the PCM detected the temperature of the fuel was out of its normal operating range during the test period. Possible Causes: Fuel injection pump has failed (this code is normally caused by an internal failure of the fuel injection pump) PCM has failed
P0181 1T CCM 2001-03 Ram with 5.9L Diesel Fuel Injection Pump Failure Conditions: Key on or engine running; and the PCM detected the signal from the Fuel Temperature Sensor signal was too high or too low in the test. Note: The Sensor is located inside the Bosch VP44 Pump Controller. Possible Causes: Fuel Temperature Sensor has failed (this Sensor is not serviceable without replacing the VP44 pump controller unit). Engine power is "de-rated" when this trouble code is set PCM has failed
P0182 1T CCM 2001-03 Ram with 5.2L VIN T CNG CNG Temperature Sensor Low Input Conditions: Key on or engine running; and the PCM detected the CNG temperature Sensor signal was less than 0.51v during the test. Possible Causes: CNG Sensor signal circuit is shorted to Sensor ground CNG Sensor signal circuit is shorted to chassis ground CNG Sensor has failed (it may be shorted internally) PCM has failed
P0183 1T CCM 2001-03 Ram with 5.2L VIN T CNG CNG Temperature Sensor High Input Conditions: Key on or engine running; and the PCM detected the CNG temperature Sensor signal was more than 4.96v during the test. Possible Causes: CNG Sensor signal circuit is open CNG Sensor signal circuit is shorted to vehicle power CNG Sensor has failed (it may be open internally) PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0196 1T CCM 2004-05 Ram Engine Oil Temperature Sensor Circuit Performance Conditions: Engine off time is more than 8 hours; ambient temperature is more than 38F (4C). If the PCM detects the engine oil temperature value is incorrect, by comparing it with other engine inputs, then the DTC will set. 3 good trips required to turn off MIL. Possible Causes: Engine oil temp signal circuit is open or is shorted to ground or to battery voltage Engine oil temp Sensor ground circuit is open Engine oil temp signal circuit is shorted to Sensor ground Engine oil temp Sensor has failed PCM has failed
P0197 1T CCM 2004-05 Ram Engine Oil Temperature Sensor Circuit Low Conditions: Ignition is on; battery voltage is more than 10.4v. The engine oil temperature Sensor circuit voltage at the PCM is less than the calibrated amount. 3 good trips required to turn off MIL. Possible Causes: Engine oil temp signal circuit is shorted to ground Engine oil temp signal circuit is shorted to Sensor ground Engine oil temp Sensor has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0198 1T CCM 2004-05 Ram Engine Oil Temperature Sensor Circuit High Conditions: Ignition is on; battery voltage is more than 10.4v. The engine oil temperature Sensor circuit voltage at the PCM is higher than the calibrated amount. 3 good trips required to turn off MIL. Possible Causes: Engine oil temp signal circuit is open or is shorted to battery voltage Engine oil temp Sensor ground circuit is open Engine oil temp Sensor has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0201-P0210 1T CCM 2001-05 Ram Injector 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 Control Conditions: ASD relay "on", engine speed under 3000 rpm, injector pulse width under 10 ms, system voltage over 12v, and the PCM did not detect any inductive spike from the injector for 0.18 ms after it is turned off. Note: This code takes 0.64-10 seconds to set once the injector is off. Possible Causes: Fuel injector 1-10 control circuit is open or grounded Fuel injector 1-10 power circuit from the ASD relay is open Fuel injector 1-10 has failed PCM injector 1-10 driver has failed
P0201-P0206 1T CCM 2004-05 Ram Injector 1, 2, 3, 4, 5, or 6 Control Conditions: ASD relay "on"; engine speed under 3000 rpm; battery voltage greater than 10v (11.9981v: Liberty). No inductive spike is detected after injector turns off. Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed
P0201-P0208 1T CCM 2004-05 Ram Injector 1, 2, 3, 4, 5, 6, 7 or 8 Control Conditions: ASD relay "on", engine speed under 3000 rpm, battery voltage greater than 10v. No inductive spike is detected after injector turn off. Possible Causes: ASD relay output circuit failure Fuel injector has malfunctioned or failed Fuel injector control circuit is open or shorted to ground PCM has failed
P0215 1T CCM 2001-03 Ram with 5.9L Diesel Fuel Injection Pump Control Circuit Conditions: Key on, and the PCM did not detect any power present on the Fuel Injection Pump control circuit (VP44) during the CCM test period. Possible Causes: Fuel injection pump relay control circuit open, shorted to ground Fuel injection pump relay ground circuit is open Fuel injection pump relay has failed Engine Control Module has failed
P0216 1T CCM 2001-03 Ram with 5.9L Diesel Fuel Injection Pump Timing Failure Conditions: No other fuel injection pump trouble codes set, engine speed more than 300 rpm, fuel command 5 ml/stroke, and the PCM detected the pump timing command was out of range. Possible Causes: Fuel injection pump gear not aligned properly Fuel filter plugged or restricted Fuel injection pump is damaged Transfer pump inlet line restricted
OBD II Trouble Code List (P0XXX Codes) - Continued

P0217 1T CCM 2001-03 Ram with 5.9L Diesel Decreased Performance (Engine Overheat) Conditions: Engine started; and the PCM detected that the signal from the ECT Sensor indicated an engine overheat condition existed. Note: Measure coolant temperature (with thermal couple) and compare to the scan tool ECT PID (they should be within 10°F of each other). Possible Causes: ECT Sensor circuit has high resistance ECT Sensor is damaged or has deteriorated PCM has failed
P0218 1T CCM 2002-05 Ram A/T High Temperature Operation Activated Conditions: Engine started; vehicle driven in gear, and the TCM indicated the Overheat shift schedule was activated (i.e., the TCM had detected a transmission oil temperature of more than 240°F). Note: This is an informational DTC, designed to aid the technician in diagnosing shift quality complaints. Possible Causes: Engine cooling system malfunction present High temperature operations activated Transmission oil pump flow is too low or it is restricted
P0219 1T CCM 2001-03 Ram with 5.9L Diesel Crankshaft Position Sensor Over-Speed Signal Conditions: Engine started; and the PCM detected the engine had exceeded its over-speed value.Possible Causes: CKP Sensor or its tone wheel is damaged (incorrect engine speed reading) Induction of an alternate fuel source (i.e., ether or propane) Improper operating conditions (i.e., motoring downhill) Turbocharger seals are leaking
OBD II Trouble Code List (P0XXX Codes) - Continued

P0221 1T CCM 2004-05 Ram Throttle Position Sensor No. 2 Performance Conditions: Ignition on; No MAP Sensor DTCs are set. TP Sensor signals Do NOT correlate to the MAP Sensor signal. If equipped, ETC light will illuminate. P2135 should also set. Possible Cause: TP Sensor No. 1 or 2 signal circuit is shorted to battery voltage or to ground TP Sensor No. 1 or 2 signal circuit has high resistance 5v supply circuit is shorted to ground TP Sensor return circuit has high resistance TP Sensor No. 1 signal circuit shorted to TP Sensor No. 2 signal circuit TP Sensor or throttle body damaged or has failed PCM has failed
P0222 1T CCM 1998-2003 Ram with 5.9L Diesel Idle Validation Signals Both Low Conditions: Key on, and the PCM detected that the Idle Validation Signal No. 1 and Idle Validation Signal No. 2 both indicated "no" voltage during the test.Possible Causes: APP Sensor is damaged IVS No. 1 or IVS No. 2 circuit(s) is shorted to Sensor ground or to chassis ground IVS No. 1 or IVS No. 2 is damaged or has failed Engine Control Module has failed
P0223 1T CCM 2001-03 Ram with 5.9L Diesel Idle Validation Signals Both High Conditions: Key on, and the PCM detected that the Idle Validation Signal No. 1 and Idle Validation Signal No. 2 both indicated high voltage during the test.Possible Causes: APP Sensor is damaged, or the Sensor ground circuit is open IVS No. 1 or IVS No. 2 circuit(s) is open or shorted to system power IVS No. 1 or IVS No. 2 is damaged or has failed Engine Control Module has failed
P0223 1T CCM 2004-05 Ram Throttle Position Sensor No. 2 Circuit High Conditions: Ignition on; battery voltage is more than 10v. TP Sensor voltage at the PCM is more than 4.9v for 25ms. If equipped, ETC light will illuminate. Possible Cause: TP Sensor No. 2 signal circuit shorted to battery voltage or to 5v supply circuit TP Sensor return circuit is open TP Sensor or throttle body is damaged or has failed PCM has failed
P0230 1T CCM 2001-02 Ram with 5.9L Diesel Transfer Pump (Lift Pump) Circuit Out-Of-Range Conditions: Key on, and the PCM detected the Transfer Pump signal was too high or low during testing.Possible Causes: Transfer Pump power feed circuit open, or shorted to ground Transfer Pump ground circuit is open Transfer Pump (internal) resistance out of range Engine Control Module has failed
P0232 1T CCM 2001-02 Ram with 5.9L Diesel Fuel Shutoff Signal Voltage To High Conditions: Key on, and the PCM detected that the Fuel Shutoff Signal was too high due a problem.Possible Causes: Transfer Pump may be damaged Engine Control Module has failed
P0234 1T CCM 2001-03 Ram with 5.9L Diesel Turbo Boost Limit Exceeded Conditions: No Intake Air Pressure Sensor codes set, engine speed over 2200 rpm, and the PCM detected the Turbo Boost exceeded its limit due to a problem in the Turbocharger Wastegate Unit.Possible Causes: Wastegate is stuck Wastegate has failed (due to a mechanical failure)
OBD II Trouble Code List (P0XXX Codes) - Continued

P0236 1T CCM 2001-03 Ram with 5.9L Diesel MAP Sensor Voltage Too High To Long Conditions: DTC P0106, P0107 and P0108 not set, engine started and the PCM detected the Pressure Test failed because the MAP Sensor signal was too high. This occurs if the Boost Pressure Sensor indicates high when other related signals (load and speed signals) indicate low.Possible Causes: MAP Sensor signal circuit open, shorted to ground or to power MAP Sensor has failed Engine Control Module has failed
P0237 1T CCM 2001-03 Ram with 5.9L Diesel MAP Sensor Voltage Too Low Conditions: Engine started, engine speed from 416-3520 rpm, system voltage over 10.5v and the PCM detected the MAP Sensor was under 0.10v.Possible Causes: Boost Pressure Test did not pass, or a MAP VREF DTC is present MAP Sensor signal circuit shorted to chassis or Sensor ground MAP Sensor has failed
P0238 1T CCM 2001-03 Ram with 5.9L Diesel MAP Sensor Voltage Too High Conditions: Engine speed more than 416 rpm but less than 3520 rpm, system voltage over 10.5v and the PCM detected the MAP Sensor signal was more than 4.88v, condition met for 2 seconds.Possible Causes: Boost Pressure Test did not pass, ECT or IAT DTC present MAP Sensor signal circuit open or shorted to vehicle power MAP Sensor has failed Engine Control Module has failed
P0251 1T CCM 2001-03 Ram with 5.9L Diesel Injector Pump Mechanical / Fuel Valve Feedback Circuit Fault Conditions: DTC P1284 not set, key on, system voltage over 12.0v, fuel command 20 ml/stroke, Fuel Delivery valve enabled, and the PCM detected the Fuel Valve feedback signal was over 9.0v.Possible Causes: Fuel injection pump relay control circuit is open or grounded Fused battery power (B+) circuit or relay output circuit is open Fuel injection pump relay or fuel injection pump is damaged
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0252 1T CCM 2001-03 Ram with 5.9L Diesel Fuel Valve Signal Missing Conditions: Engine started; system voltage over 10.5v, Fuel Valve current feedback test completed, and the PCM detected a signal from the Fuel Metering valve that indicated the valve had moved.Possible Causes: Fuel injection pump relay control circuit is open or grounded Fused battery power (B+) circuit or relay output circuit is open Fuel injection pump relay or fuel injection pump is damaged
P0253 1T CCM 2001-03 Ram with 5.9L Diesel Injector Pump Fuel Valve Current Too Low Conditions: Engine started; engine speed more than 100 rpm and the PCM detected a condition of low current (or no current) at the Fuel Metering Valve during the test period (there may be an open circuit). Refer to code repair chart in other manuals to test this code.
P0254 1T CCM 2001-03 Ram with 5.9L Diesel Injector Pump Fuel Valve Current Too High Conditions: Key "off", and the PCM detected system voltage (power) at the Fuel Metering Valve VP44 circuit during the test period.Possible Causes: Fuel injection pump is damaged or it has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0300 1T Catalyst 2T Emission 2001-03 Ram Multiple Cylinder Misfire Detected Conditions: Engine less than 3000 rpm; adaptive numerator updated. PCM detected a misfire rate of 1-2% (High Emissions 2T), or a misfire rate of 6-30% (Catalyst Damaging 1T) in 2 or more cylinders. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip! Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects two or more cylinders Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects two or more cylinders (i.e., a contaminated, dirty or sticking fuel injector) Ignition system problem (coil or plug) in two or more cylinders Vehicle driven with low fuel pressure or while very low on fuel
P0300 1T Catalyst 2T Emission 2001-03 Ram Multiple Cylinder Misfire Detected Conditions: Engine less than 3000 rpm; adaptive numerator updated. PCM detected a misfire rate of 1% (High Emissions 2T), or a misfire rate of 6-30% (Catalyst Damaging 1T) in two or more cylinders. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip! Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects two or more cylinders Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects two or more cylinders Ignition system problem (coil or plug) in two or more cylinders Vehicle driven with low fuel pressure or while very low on fuel
P0300 1T CCM 2T Emission 2001-03 Ram with 5.9L Diesel Multiple Cylinder Misfire Conditions: Engine less than 880 rpm; ECT Sensor above 140°F; VSS at 0 mph; PTO inactive. PCM detected the time for crankshaft to turn 120 during firing event of one or more cylinders compared to the time for the crank to turn 120 for the previous cylinder exceeded 240 microseconds. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip! Possible Causes: Air leak (manifold, PCV) that affects more than 1 cylinder Base engine problem that affects more than 1 cylinder CMP Sensor, Sensor wiring harness or tone wheel is damaged Ignition system problem that affects more than one cylinder Fuel metering problem (fuel injectors, fuel pressure) that affects more than one cylinder EGR or EVAP Purge problem that affects more than 1 cylinder
OBD II Trouble Code List (P0XXX Codes) - Continued

P0300 2T CCM 2004-05 Ram Multiple Cylinder Misfire Conditions: Any time engine is running and Adaptive Numerator (Target Learning Coefficient) has been successfully updated. If more than 1.0% (Neon, Pacifica), 1.5% (300M, Magnum) or 1.8% (Sebring, Stratus, Caravan/Town & Country), 2% (Durango, Ram, Liberty), 2.5% (Durango LEV, Ram LEV, Liberty LEV), misfire rate is measured during 2 trips. 3 good trips required to turn off MIL. Possible Causes: ASD relay output circuit fault Injector control circuit fault Coil control circuit fault Ignition wiring, coil control circuit or coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module is damaged Fuel pressure leakdown fault Fuel injector damaged or has failed Engine mechanical problems exist PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0301-P0310 1T Catalyst 2T Emission 2001-03 Ram Cylinder 1-10 Misfire Detected Conditions: Engine speed less than 3000 rpm, adaptive numerator updated, and the PCM detected a misfire rate of 1-2% (High Emissions 2T), or a misfire rate of 6-30% (Catalyst Damaging 1T) in only one cylinder. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip! Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) in only one cylinder
OBD II Trouble Code List (P0XXX Codes) - Continued

P0301-P0308 1T Catalyst 2T Emission 2001-03 Ram Cylinder 1-8 Misfire Detected Conditions: Engine speed less than 3000 rpm, adaptive numerator updated, and PCM detected a misfire rate of 1% (High Emissions 2T), or a misfire rate of 6-30% (Catalyst Damaging 1T) in a single cylinder. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip! Possible Causes: Air leak in the intake manifold, or in the EGR or EVAP system Base engine mechanical fault that affects only one cylinder Erratic or interrupted CKP or CMP Sensor signals Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector) Ignition system problem (coil or plug) that affects only one cylinder
P0301-P0306 1T Catalyst 2T Emission 2001-03 Ram with 5.9L Diesel Cylinder 1-6 Misfire Detected Conditions: Engine started; engine speed below 860 rpm, ECT Sensor over 140°F, VSS at 0 mph, PTO "off", and the PCM detected the time for the crankshaft to turn 120 degrees while firing one cylinder when compared to the time for the crankshaft to turn 120 degrees for the previous cylinder exceeded 40 ms. Note: If the misfire is severe, the MIL will flash on/off on 1st trip! Possible Causes: Base engine mechanical fault that affects only one cylinder CMP Sensor, Sensor wiring harness or tone wheel is damaged Fuel delivery component fault that affects only one cylinder (e.g., a dirty fuel injector)
P0301-P0306 2T Catalyst 2T CCM 2004-05 Ram Cylinder 1-6 Misfire Detected Conditions: Any time engine is running and Target Learning Coefficient (TLC) has been successfully updated, if more than 1.0% (Pacifica) or 1.8% (Sebring, Stratus, Caravan/Town & Country), 2% (Durango, Ram, Liberty), 2.5% (Durango LEV, Ram LEV, Liberty LEV), misfire rate is measured during 2 trips or with 10-30% misfire rate during one trip. Possible Causes: Intermittent misfire Base engine mechanical fault that affects only 1 cylinder Ignition wiring, coil control circuit or coil fault ASD relay output circuit (coil or injector) problem Spark plug malfunction or failure on 1 cylinder CMP Sensor, Sensor wiring harness or tone wheel is damaged Fuel delivery component fault that affects only 1 cylinder (e.g., a dirty fuel injector) Injector or control circuit failure PCM has failed
P0301-P0308 2TCatalyst 2004-05 Ram Cylinder 1-8 Misfire Detected Conditions: Any time engine is running and the adaptive numerator has been successfully updated. When more than 1.5% (300M, Magnum), 2% (Durango, Ram), 2.5% (Durango LEV, Ram LEV), misfire rate is measured during 2 trips, or with 10-30% misfire during 1 trip. 3 good trips required to turn off MIL. Possible Causes: ASD relay output 2 circuit fault Injector control 1 circuit fault Coil control 1 circuit fault Ignition wiring, spark plug, or ignition coil fault Fuel pump inlet strainer plugged Restricted fuel supply line Fuel pump module fault Fuel pressure leakdown fault Fuel injector is damaged or has failed Engine mechanical problems exist PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0315 1T CCM 2001-05 Ram No Crankshaft Position Sensor Learned Conditions: Engine started; engine runtime more than 50 seconds under closed throttle conditions; A/C off; ECT Sensor more than 167°F (75C). The PCM detected that one of the CKP Sensor windows had too much variance (e.g., over 2.86%) from its calibrated reference point. Possible Causes: Crankshaft tone wheel flex plate is damaged Tone wheel/pulse ring may be damaged Erratic CKP Sensor signals (wiring/connector problem) CKP Sensor has failed PCM has failed
P0320 1T CCM 2001-03 Ram No Crank Reference Signal to PCM Conditions: Engine cranking, vacuum signals present; and the PCM detected from 3-8 CMP Sensor signals without detecting a CKP Sensor signal. Possible Causes: CKP Sensor signal circuit is open or grounded CKP Sensor VREF circuit is open or grounded Tone wheel or flex plate damage or erratic CKP Sensor signals CKP Sensor is damaged or has failed PCM has failed
P0320 1T CCM 2001-02 Ram with 5.9L Diesel No Crank Reference Signal to PCM Conditions: Engine started; system voltage from 10-15v, and the PCM detected the engine speed signal indicated under 800 rpm while the engine speed signal at the ECM indicated over 1024 rpm. Possible Causes: CKP Sensor signal circuit is open or grounded CKP Sensor VREF circuit is open or grounded Tone wheel or flex plate damage or erratic CKP Sensor signals CKP Sensor is damaged or has failed PCM has failed

OBD II Trouble Code List (P0XXX Codes) - Continued

P0325 1T CCM 2001-05 Ram Knock Sensor No. 1 Circuit Conditions: Engine running at idle or in deceleration mode, and the PCM detected the Knock Sensor signal was below a minimum value (value depends on engine speed), or if Sensor voltage was about 5.0v with engine within idle range. Possible Causes: Knock Sensor connector is damaged or shorted Knock Sensor signal circuit open or grounded Knock Sensor signal circuit shorted to return circuit Knock Sensor return circuit is open Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0330 1T CCM 2002-03 Ram with 2.4L I4 or 3.7L V6 Knock Sensor No. 2 Circuit Conditions: Engine running at idle or in deceleration mode, and the PCM detected the Knock Sensor No. 2 signal was below a minimum value (value depends on engine speed), or was more than 5.0v. Possible Causes: Knock Sensor signal circuit open or grounded Knock Sensor not tightened properly Knock Sensor damaged or has failed (it may be open internally) PCM has failed
P0330 1T CCM 2004-05 Ram Knock Sensor No. 2 Circuit Conditions: Engine running. The Knock Sensor circuit voltage falls below a minimum value at idle or deceleration. The minimum value is from a lookup table internal to the PCM and is based on engine rpm. This DTC will also set if the Sensor voltage goes above 5v. 3 good trips required to turn off MIL. Possible Causes: Knock Sensor No. 2 signal circuit shorted to battery voltage or to KS 2 return circuit Knock Sensor No. 2 signal circuit or return circuit is open Knock Sensor No. 2 signal circuit is shorted to KS 2 return circuit or to ground Knock Sensor damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0335 1T CCM 2001-05 Ram Crankshaft Position Sensor Circuit Conditions: Engine cranking with at least 8 CMP Sensor signals detected. The PCM did not detect any CKP Sensor signals for 2 seconds. Possible Causes: Intermittent CKP signal CKP Sensor signal circuit is open or it is shorted to ground or voltage CKP Sensor 5v supply circuit is open or shorted to ground or voltage CKP Sensor ground circuit is open CKP Sensor or CMP Sensor is damaged or has failed PCM has failed
P0336 1T CCM 2001-03 Ram with 5.9L Diesel Crankshaft Position Sensor Signal Conditions: Engine started; CMP Sensor signals detected, and the PCM did not detect any change in the CKP Sensor signal during the test period. Possible Causes: Check the tone or pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor VREF circuit is open or shorted to ground CKP Sensor is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0339 1T CCM 2001-05 Ram Crankshaft Position Sensor Circuit Intermittent Conditions: Engine cranking or running; CMP Sensor signals detected. The PCM detected an intermittent loss of the CKP Sensor signal. The Failure counter must reach 20 before this code will set. Possible Causes: Check the tone wheel/pulse ring for damage or debris collection CKP Sensor signal circuit is open or shorted to ground CKP Sensor 5v supply circuit is open or shorted to ground CKP Sensor is damaged or it has failed PCM has failed
P0340 1T CCM 2001-05 Ram No Camshaft Position Sensor Circuit Failure Conditions: Engine cranking or running, system voltage over 10v. The PCM detected CKP pulses without detecting any CMP Sensor pulses for 5 seconds or 2.5 engine revolutions. Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor signal circuit is open or shorted to ground or to battery voltage or 5v supply circuit CMP Sensor 5v supply circuit is open or shorted to ground or to battery voltage CMP Sensor ground circuit is open CMP Sensor is damaged or has failed CKP Sensor is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0341 1T CCM 2001-03 Ram with 5.9L Diesel Camshaft Position Sensor Signal Conditions: Engine started; system voltage from 8.0-15v, and the PCM detected an incorrect tone wheel tooth signal occurred 25 times in 8 seconds, or the PCM did not detect any CMP Sensor signals for 2 seconds. Possible Causes: CMP Sensor signal circuit is open or shorted to ground CMP Sensor VREF circuit is open or shorted to ground CMP Sensor is damaged or has failed PCM has failed
P0342 1T CCM 2001-03 Ram with 5.9L Diesel CMP Sensor Supply Voltage Too Low Conditions: Engine started; system voltage from 8.0-15v, and the PCM detected the CMP Sensor VREF signal was less than 4.2v for 2 seconds. Possible Causes: CMP Sensor connector is damaged, open or it is shorted CMP Sensor VREF circuit is open CMP Sensor VREF circuit is shorted to ground CMP Sensor is damaged or has failed PCM has failed
P0343 1T CCM 2001-03 Ram with 5.9L Diesel CMP Sensor Supply Voltage Too Low Conditions: Engine cranking or engine running, system voltage over 10.5v and the PCM detected an intermittent loss of the CMP Sensor signal during the period of 2.5 complete engine revolutions. The failure counter must reach 20 before this code matures and a code is set. Possible Causes: CMP Sensor signal circuit is open (intermittent fault) CMP Sensor signal circuit shorted to ground (intermittent fault) CMP Sensor ground circuit is open (an intermittent fault) PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0344 1T CCM 2001-05 Ram Camshaft Position Sensor Circuit Intermittent Conditions: Engine cranking or running; system voltage over 10.5v. The PCM detected an intermittent loss of the CMP Sensor signal during the period of 2.5 complete engine revolutions. The failure counter must reach 20 before this code matures and a code is set. Possible Causes: Wiring harness fault 5v supply circuit open or shorted to ground Tone wheel/pulse ring is damaged or corroded CMP Sensor has failed CMP Sensor signal circuit is open, shorted to ground or battery voltage or 5v supply CMP Sensor ground circuit is open PCM has failed
P0350 1T CCM 2001-2002 Ram with 5.9L Diesel Ignition Coil Current Too High Conditions: Engine started; and the PCM detected the Ignition Coil current level was too high. Possible Causes: Ignition Coil No. 1, 2 or 3 control circuit (the coil windings) shorted internally Ignition Coil No. 1, 2 or 3 control circuit is shorted to ground PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0351, P0152, P0153 1T CCM 2001-03 Ram Ignition Coil No. 1, 2 or 3 Primary Circuit Conditions: Engine cranking or running; ASD relay on, system voltage over 10v, Coil No. 1, 2 or 3 was not in dwell period when it was checked, and the PCM detected that the peak coil current was not reached in 2.5 ms of dwell for 3-6 seconds. The coil primary resistance is less than 2 ohms. Possible Causes: ASD relay power circuit to the ignition coil is open Ignition Coil No. 1, 2 or 3 primary "driver" circuit open or grounded Ignition Coil No. 1, 2 or 3 is damaged or it has failed PCM has failed
P0351-P0358 1T CCM 2001-03 Ram Ignition Coil No. 1-8 Primary Circuit Conditions: Engine cranking or speed less than 2012 rpm, ASD relay on, system voltage 8v or 12v, coils not in dwell period, and the PCM detected peak coil current was not reached in 2.5 ms of dwell for 3-6 seconds. The coil primary resistance is less than 2 ohms. Possible Causes: ASD relay power circuit to the ignition coil is open Ignition coil primary "driver" circuit open or grounded Ignition coil is damaged or it has failed PCM has failed
P0370 1T CCM 2001-03 Ram with 5.9L Diesel Fuel Injection Pump Speed Sensor Signal Lost Conditions: Engine started; and the PCM detected that it lost the Fuel Injection Pump Speed/Position Signal (due to a fault in the internal Fuel injection Pump (the pump may have failed). Possible Causes: ECM cannot control the engine speed through circuit WP44 Fuel Injection pump has failed due to an internal problem
P0380 1T CCM 2001-03 Ram with 5.9L Diesel Intake Air Heater Relay No. 1 Control Circuit Conditions: Key on for 1 second, and the PCM detected the Intake Air Heater Relay No. 1 circuit was not activated for more than one second. This problem is not due to a fault in the heater element. Possible Causes: Intake Air Heater relay control circuit open or shorted to ground Intake Air Heater relay ground circuit is open Intake Air Heater relay is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0381 1T CCM 2001-03 Ram with 5.9L Diesel Wait To Start Lamp Inoperative Conditions: Key on for 2 seconds, and the PCM detected the Wait To Start control circuit was not activated for more than two seconds. The PCM expects to detect a voltage drop of 0.5v. Possible Causes: Wait To Start lamp driver circuit shorted to ground (the lamp will be on continuously) Wait To Start lamp driver circuit open (lamp will not come on) Wait To Start bulb has failed Wait To Start ignition feed circuit is open, or the Cluster is open PCM has failed
P0382 1T CCM 2001-03 Ram with 5.9L Diesel Intake Air Heater Relay No. 2 Control Circuit Conditions: Key on for one second; and the PCM detected the Intake Air Heater Relay 2 Signal circuit was not activated for more than one second. Possible Causes: Intake air heater relay control circuit is open or shorted to ground Intake air heater relay power circuit is open Intake air heater relay is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0401 2T EGR 2001-03 Ram EGR System Fault Conditions: Engine running with throttle open under steady load in closed loop, ECT Sensor more than 180°F, BTS signal more than 0°F, system voltage over 10.5v, fuel trim not operating near its limits, then the EGR valve was cycled off to on and the PCM detected very little change in the O2 signal. Note: This test is repeated up to three (3) times for each vehicle trip.Possible Causes: EGR valve control circuit open, grounded or shorted to power EGR exhaust transfer tubes blocked in the exhaust manifold ASD relay power circuit open to the EGR solenoid EGR valve is damaged or has failed PCM has failed TSB 18-33-98 contains a repair procedure for this code
P0401 2T EGR 2004-05 Ram EGR System Fault Conditions: Engine running for more than 2 minutes with ECT more than 158°F (70C). EGR is active. Vehicle is at less than 8500 feet altitude. Ambient temperature more than 20F (-6C). PCM closes EGR valve while monitoring O2 Sensor signal. Once a closed EGR fueling sample has been established, PCM then ramps in EGR and additional fueling, while monitoring the O2 Sensor signal in the open state. A fueling sample is again established. The PCM then compares the 2 different O2 Sensor signal readings (fueling samples). If a larger than expected variation is detected, a soft failure is recorded. Three soft failures set a one-trip (1T) failure. After 2 failed trips (2T), a DTC is set and the MIL illuminated.Possible Causes: EGR valve is open at idle EGR solenoid ground circuit is open EGR solenoid control circuit is open, shorted to ground or to voltage ASD relay power circuit open to the EGR solenoid EGR valve or solenoid is damaged or has failed PCM has failed (EGR open or EGR closed)
OBD II Trouble Code List (P0XXX Codes) - Continued

P0403 1T CCM 2001-05 Ram EGR Solenoid Circuit Conditions: Engine started; system voltage over 10.5v. The EGR solenoid control circuit was not in its expected state when requested to operate by the PCM. Possible Causes: EGR solenoid ground circuit is open EGR solenoid control circuit is open or shorted to ground or to voltage EGR solenoid power circuit is open EGR solenoid is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0404 1T CCM 2001-05 Ram EGR Position Sensor Signal Performance Conditions: Engine started; system voltage over 10.5v and the PCM detected that the EGR flow (or valve movement) was not what was expected during the test period. Possible Causes: EGR Sensor signal circuit is open or shorted to ground EGR Sensor 5v supply circuit is open or has high resistance EGR Sensor ground circuit is open EGR solenoid control circuit has a problem EGR valve actuator loose, sticking, blocked or improperly grounded EGR Sensor is damaged or has failed Intermittent condition PCM has failed
P0405 1T CCM 2001-05 Ram EGR Position Sensor Circuit Low Input Conditions: Key on or engine running; system voltage over 10v. The PCM detected that the EGR Sensor signal indicated less than 0.1v. Possible Causes: EGR Sensor signal circuit is shorted to ground or open EGR Sensor VREF (5v) circuit is open or shorted to ground EGR Sensor is damaged (shorted internally) or it has failed EGR position internal failure PCM has failed
P0406 1T CCM 2001-05 Ram EGR Position Sensor Circuit High Input Conditions: Key on or engine running; system voltage over 10.5v. The PCM detected the EGR Sensor indicated more than 4.89v for 6 seconds. Possible Causes: Intermittent condition EGR Sensor signal is shorted to VREF (5v) supply circuit or to battery voltage EGR Sensor ground circuit is open EGR Sensor signal circuit is open EGR Sensor is damaged (it may have an internal open circuit) EGR solenoid failure PCM has failed
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P0420 2T Catalyst 2001-05 Ram Catalyst Efficiency Below Normal (Bank 1) Conditions: Engine speed at 1200-1700 rpm in closed loop with the throttle open for over 2 minutes, ECT Sensor more than 147°F, MAP Sensor signal from 15.0-21.0 in. Hg, and the PCM detected the switch rate of the rear O2 reached 70% of the switch rate of the front O2. Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy)
P0420 1T Catalyst 2004-05 Ram Catalyst Efficiency Below Normal (Bank 1) Conditions: Engine is running for more than 90 seconds; engine coolant is more than 158F (70C); vehicle speed is 20-55 mph; engine speed is 1200-1900 rpm; MAP vacuum at 15-20 in. Hg. As catalyst efficiency deteriorates, the switch rate of the downstream O2 Sensor approaches that of the upstream O2 Sensor. If at any point during the test, the switch ratio reaches a predetermined value, a counter is incremented by one. Possible Causes: Catalytic converter damaged or has failed Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Front O2 older (aged) than the rear O2 (O2 is lazy)
OBD II Trouble Code List (P0XXX Codes) - Continued

P0430 1T Catalyst 2004-05 Ram Catalyst (2/1) Efficiency Below Normal Conditions: After engine warm-up, ECT Sensor more than 170°F for 180 seconds of open throttle operation and over 20 mph (engine between 1200-1700 rpm and MAP vacuum between 15-20 in. Hg). As catalyst efficiency deteriorates, the switch rate of the downstream O2 Sensor approaches that of the upstream O2 Sensor. If, at any point during the test, the switch ratio reaches a predetermined value, a counter is incremented by one. 3 good trips required to turn off MIL. Possible Causes: Exhaust leaks Base engine problems Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy)
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0432 2T Catalyst 2001-03 Ram Catalyst Efficiency Fault (Bank 2) Conditions: Engine started; then vehicle driven at 1200-1700 rpm at over 20 mph with the throttle open and steady for 3 minutes, ECT Sensor over 147°F, MAP Sensor at 15.0-21.0" Hg, and the PCM detected the switch rate of the rear O2 approached the switch rate of the front O2 during the Catalyst Monitor test period. Possible Causes: Air leaks in at the exhaust manifold or exhaust pipes Base engine problems (high coolant or engine oil consumption) Catalytic converter damaged or has failed Front O2 older (aged) than the rear O2 (O2 is lazy)
P0440 2T EVAP 2002-05 Ram EVAP Purge System Fault Conditions: Ambient Air Temperature from 39-89°F (4-32C); engine running; Fuel level over 12%. The PCM detected that the NVLD switch did not close during medium/large leak test. Once this event occurs, the PCM will increase the amount of vacuum in the system that flows past the purge valve. If the NVLD switch does not close under these conditions, the PCM will set this code. Possible Causes: EVAP purge valve vacuum supply is leaking or clogged EVAP purge valve is stuck closed EVAP purge solenoid has failed NVLD assembly (leak detection) is damaged or has failed NVLD switch circuit is open or the NVLD switch has failed Ground circuit is open PCM has failed
P0441 2T EVAP 2001-05 Ram EVAP Purge Flow Monitor Fault Conditions: Engine at idle speed in closed loop for 200 seconds, BARO Sensor signal less than 8,000 feet, ECT Sensor more than 160°F, no Low Fuel, MAP Sensor signal less than 23.7" Hg, and the PCM did not detect any purge flow through the EVAP system during this test. Possible Causes: EVAP purge solenoid vacuum line loose, leaking or restricted EVAP purge solenoid stuck leaking, stuck open or stuck closed EVAP purge vacuum line to canister leaking or disconnected EVAP canister leaking, damaged or has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0441 2T EVAP 2004-05 Ram EVAP Purge System Performance Check with cold start test. Engine running. Small leak test passed. The PCM activates the EVAP purge solenoid and it gradually increases to maximum flow. During flow, the PCM looks for the NVLD switch to close. If the PCM does not see the NVLD switch close at maximum flow, an error is detected. Possible Causes: Intermittent condition EVAP purge solenoid functioning improperly EVAP purge solenoid vacuum supply leaking or clogged
P0442 2T EVAP 2001-03 Ram EVAP System Small Leak Detected Conditions: ECT Sensor from 40-90°F and within 10°F of the BTS input at startup (cold engine), fuel level more than 1/2 full, engine started, EVAP leak test enabled, and the PCM detected a leak greater than 0.040 but less than 0.080" somewhere in the EVAP system.Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, damaged or has failed Fuel tank cap is loose, or the cap release pressure is incorrect Leak detection pump damaged or leaking
OBD II Trouble Code List (P0XXX Codes) - Continued

P0442 2T EVAP 2004-05 Ram EVAP System Medium Leak Detected Conditions: Monitor with engine running. Cold start test. Fuel level more than 12%. Ambient temperature between 39-89F (4-32C). Closed loop fuel system. Test runs when small leak test is maturing. The PCM activates EVAP purge solenoid to pull EVAP system into a vacuum to close the NVLD switch. Once this switch is closed, the PCM turns the EVAP purge solenoid off to seal the EVAP system. If the NVLD switch re-opens before the calibrated amount of time for a Medium leak, an error is detected. Possible Causes: Intermittent condition Vacuum hoses, connections or switches have come loose or malfunctioned EVAP emission system has a leak EVAP purge solenoid operation has malfunctioned NVLD switch operation has malfunctioned
P0443 1T CCM 2001-03 Ram EVAP Purge Solenoid Circuit Fault Conditions: Engine started; system voltage over 10v, EVAP Purge solenoid commanded ON and off, and the PCM detected an unexpected voltage condition at the EVAP purge solenoid for 3 seconds. Note: The solenoid resistance at 68°F is from 25-35 ohms. Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid power circuit open EVAP purge solenoid is damaged or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0443 1T CCM 2004-05 Ram EVAP Purge Solenoid Circuit Fault Conditions: Ignition on or engine running. Battery voltage more than 10v. The PCM will set a trouble code if the actual state of the solenoid does not match the intended state. Possible Causes: EVAP purge solenoid control circuit open or shorted to ground EVAP purge solenoid return circuit open or shorted to ground EVAP purge solenoid is damaged or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0452 1T CCM 2002-05 Ram NVLD Pressure Switch Sense Circuit Low Input Conditions: Engine started; and immediately after the engine is running. The PCM activates the NVLD solenoid to test the NVLD switch circuit. If the switch is not open, the PCM sets this code. Possible Causes: EVAP purge solenoid control circuit is shorted to ground EVAP purge solenoid is leaking or it is stuck in open position NVLD assembly or NVLD switch is damaged or it has failed NVLD switch signal circuit is shorted to ground PCM has failed
P0453 1T CCM 2002-05 Ram NVLD Pressure Switch Sense Circuit High Input Conditions: Engine started; and immediately after the engine is running, the PCM activates the NVLD solenoid to test the NVLD switch circuit. If the switch does not close under these conditions, this code is set. Possible Causes: NVLD assembly ground circuit is open NVLD switch signal circuit is open or shorted to power (B+) or to NVLD solenoid control circuit NVLD assembly or switch is damaged or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0455 2T EVAP 2002-05 Ram EVAP Large Leak Detected Conditions: Ambient Air Temperature from 39-89°F at engine startup, engine running under closed loop conditions, Fuel Level over 12%, then with the EVAP purge solenoid enabled (to pull vacuum into the system to close the NVLD switch) and the EVAP "small leak" test maturing, the PCM turns "off" the EVAP purge solenoid once the NVLD switch closes. If the NVLD switch reopens before a calibrated amount of time expires, a "large" leak in the system is detected (larger than 0.080 in.).Possible Causes: EVAP purge solenoid is damaged or it has failed Fuel tank cap is damaged, missing or the wrong part number NVLD switch is damaged or it has failed
P0455 2T EVAP 2001-03 Ram EVAP Large Leak (0.80") Detected Conditions: ECT Sensor from 40-90°F and within 10°F of the BTS input at startup (cold startup), fuel level more than 1/2 full, engine started, EVAP leak test enabled, and the PCM detected a leak greater than 0.080 existed somewhere in the EVAP system.Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, fuel cap loose or missing Leak detection pump damaged or leaking
OBD II Trouble Code List (P0XXX Codes) - Continued

P0456 2T EVAP 2001-03 Ram EVAP Small Leak (0.020") Detected Conditions: ECT Sensor from 40-90°F and within 10°F of BTS Sensor at startup, Fuel Level from 15-85%, engine started, EVAP leak test enabled, and the PCM detected a leak greater than 0.020 but less than 0.040" somewhere in the EVAP system.Possible Causes: EVAP fuel tank or canister vapor hoses leaking or damaged EVAP system component leaking, fuel cap loose or missing Leak detection pump damaged or leaking
P0456 2T EVAP 2002-05 Ram EVAP System Small Leak Detected Conditions: Ambient Air Temperature from 39-109°F at engine startup, engine running under closed loop conditions, Fuel Level below 88%, then with the EVAP system sealed, the PCM monitors the NVLD switch. If the NVLD switch does not close within a calibrated amount of time expires, a "small" leak in the EVAP system was detected.Possible Causes: Fuel tank cap is damaged, loose or the wrong part number Small leak present somewhere in the EVAP system
P0457 2T EVAP 2004-05 Ram Loose Fuel Cap Condition: Monitor with ignition on. Ambient temperature should be between 39-109F (4-43C). Vehicle should be in closed loop fuel system. The PCM has detected an EVAP system leak after a fuel level increase. If the NVLD switch reopens before the calibrated amount of time after a fuel tank fill, an error is detected. MIL will illuminate. Condition requires 3 good trips to turn off MIL. Possible Causes: Loose or missing fuel fill cap Intermittent condition NVLD system or switch malfunction EVAP system leaking EVAP purge solenoid malfunction
OBD II Trouble Code List (P0XXX Codes) - Continued

P0460 1T CCM 2001-03 Ram Fuel Level Sending No Change Over Miles Conditions: Engine started; fuel level less than 15% or more than 85%, and the PCM detected a Low Fuel condition that the fuel level was less than 15% for 120 miles, or that the fuel level remained at more than 85% and did not change by at least 10% after traveling over 100 miles. Possible Causes: Fuel level sending unit signal circuit open or shorted to ground Fuel level sending unit ground circuit is open Fuel level sensing unit is damaged or the fuel tank is damaged
OBD II Trouble Code List (P0XXX Codes) - Continued

P0461 2T CCM 2004-05 Ram Fuel Level Sensor No. 1 Malfunction Conditions: Test No. 1: With ignition on, fuel level is compared to the previous key-down after a 20-second delay. If the PCM does not see a difference in the fuel level of more than 0.1v, the test will fail. Test No. 2: The PCM monitors the fuel level with ignition on. If the PCM does not see a change in the fuel level of 0.1765 in. over a set amount of miles, the test will fail. Possible Causes: Fuel tank or internal siphon hose damage Fuel level signal circuit open or shorted to ground Ground circuit is open Fuel level Sensor malfunction
P0462 1T CCM 2001-03 Ram Fuel Level Sensing Unit Low Input Conditions: Key on or engine running; system voltage over 10.5v and the PCM detected the fuel level sensing unit signal indicated less than 0.98v, condition met for 200 seconds. No MIL. Possible Causes: Fuel level sending unit signal circuit shorted to Sensor ground Fuel level sending unit signal circuit shorted to chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0461 2T CCM 2004-05 Ram Fuel Level Sensor No. 1 Malfunction Conditions: Test No. 1: With ignition on, fuel level is compared to the previous key-down after a 20-second delay. If the PCM does not see a difference in the fuel level of more than 0.1v, the test will fail. Test No. 2: The PCM monitors the fuel level with ignition on. If the PCM does not see a change in the fuel level of 0.1765 in. over a set amount of miles, the test will fail. Possible Causes: Fuel tank or internal siphon hose damage Fuel level signal circuit open or shorted to ground Ground circuit is open Fuel level Sensor malfunction
P0462 1T CCM 2001-03 Ram Fuel Level Sensing Unit Low Input Conditions: Key on or engine running; system voltage over 10.5v and the PCM detected the fuel level sensing unit signal indicated less than 0.98v, condition met for 200 seconds. No MIL. Possible Causes: Fuel level sending unit signal circuit shorted to Sensor ground Fuel level sending unit signal circuit shorted to chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0462 1T CCM 2004-05 Ram Fuel Level Sensor No. 1 Low Input Conditions: Key on. Battery voltage over 10.4v. Fuel level Sensor signal goes below 0.1961v (exc. Durango, Ram) for more than 5 seconds, or below 0.4v for more than 90 seconds (Durango, Ram). DTC is recorded. Possible Causes: Intermittent condition Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged Instrument cluster problem
P0463 1T CCM 2001-03 Ram Fuel Level Sending Unit High Input Conditions: Key on or engine running; system voltage over 10.5v and the PCM detected the fuel level sensing unit signal indicated more than 4.90v, condition met for 200 seconds. No MIL. Possible Causes: Fuel level sending unit signal circuit shorted to Sensor or chassis ground Fuel level sensing unit is damaged or the fuel tank is damaged BCM or PCM has failed
P0463 1T CCM 2004-05 Ram Fuel Level Sensor No. 1 High Input Conditions: Key on. Battery voltage over 10.4v. If Fuel Level Sensor signal goes above 4.7v for more than 5 seconds (exc. Durango, Ram, Viper, Liberty), above 4.9v for more than 90 seconds (Durango, Ram, Viper, Liberty), this DTC is recorded. Possible Causes: Fuel level sending unit signal circuit is open or is shorted to battery voltage Fuel level Sensor ground circuit is open Fuel level Sensor is damaged or the fuel tank is damaged Instrument cluster is faulty BCM or PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0480 1T CCM 2001-03 Ram Low Speed (No. 1) Fan Relay Control Circuit Conditions: Key on or engine running; and the PCM detected an unexpected low or high voltage condition on the Low Speed Fan Relay control circuit. Possible Causes: LFAN relay power circuit is open from the relay to fused power LFAN relay control circuit is open or shorted to chassis ground LFAN relay is damaged or has failed PCM has failed
P0480 1T CCM 2004-05 Ram Low Speed (No.1) Fan Control Relay Circuit Conditions: Key on. Battery voltage over 10v. An open or shorted circuit is detected in the Low Speed Fan Relay control circuit system. Possible Causes: Fan relay intermittent condition Ground circuit is open Fused B+ output circuit malfunction Fan relay control circuit is open or shorted to battery voltage or ground Fan relay is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0481 1T CCM 2001-05 Ram High Speed (No. 2) Fan Relay Control Circuit Conditions: Key on or engine running; and the PCM detected an unexpected low or high voltage condition (open or shorted condition) on the High Speed Fan Relay circuit. Possible Causes: HFAN relay power circuit is open from the relay to fused power HFAN relay control circuit is open or shorted to chassis ground Fan relay(s) failed PCM has failed.
OBD II Trouble Code List (P0XXX Codes) - Continued

P0498 1T CCM 2001-05 Ram NVLD Canister Vent Solenoid Circuit Low Conditions: Key on or engine running; and the PCM detected an unexpected low voltage condition on the Natural Vacuum Leak Detection (NVLD) control circuit during the CCM test period. Possible Causes: NVLD canister vent solenoid control circuit is shorted to ground NVLD canister vent solenoid is damaged or it has failed PCM has failed
P0499 1T CCM 2001-05 Ram NVLD Canister Vent Solenoid Circuit High Conditions: Key on or engine running. The PCM detected an open or unexpected high voltage condition on the Natural Vacuum Leak Detection (NVLD) circuit. Possible Causes: NVLD canister vent solenoid control circuit is open or is shorted to power NVLD canister vent solenoid ground circuit is open NVLD canister vent solenoid is damaged or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0500 1T CCM 2001-03 Ram Vehicle Speed Sensor Circuit Fault Conditions: Engine started; engine runtime over 31 seconds, ECT Sensor more than 180°F, transaxle not in Park or Neutral, brakes not applied, engine speed over 1800 rpm, MAP Sensor less than 11" Hg, and the PCM did not detect a VSS signal from the TCM for over 11 seconds. Possible Causes: VSS or OSS signal circuit to the PCM is open or shorted to ground VSS or OSS power circuit (8v) is open or shorted to ground VSS or OSS ground circuit to the PCM is open Speedometer pinion or the VSS is damaged or has failed
P0500 2T CCM 2001-02 Ram with 5.9L Diesel Vehicle Speed Sensor Circuit Fault Conditions: Engine started; engine speed from 1024-2784 rpm, engine boost more than 7 psi, and the PCM did not detect a VSS signal from the CAB module for over 15 seconds during testing. Possible Causes: CAB circuit from the CAB to PCM is open or it is shorted OSS signal circuit to the TCM is open or shorted to ground OSS is damaged or has failed TCM or PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0501 2T CCM 2001-05 Ram Vehicle Speed Sensor Performance Conditions: Engine started; vehicle driven at over 1500 rpm for 10 seconds, gear selector not in Park or Neutral (or clutch is not depressed on M/T); brakes not applied. The PCM (or ECM: Liberty with Diesel) did not receive any VSS signals from the TCM (BCM: Liberty) for 11 seconds for 2 consecutive trips. 3 good trips required to turn off MIL. Possible Causes: Check for any ABS/RWAL or TCM codes related to the VSS VSS connector is damaged, open or it is shorted VSS signal is open, shorted to ground or shorted to power Incorrect tire circumference ABS/RWAL controller, BCM, ECM, TCM or PCM has failed
P0501 1T CCM 2001-03 Ram with 5.9L Diesel Vehicle Speed Sensor Signal Range/Performance Conditions: Engine started; vehicle driven to a speed over 20 mph for 2 seconds (as indicated by the CCD Bus signal to the PCM), ECM vehicle speed signal less than 10 mph, and the PCM did not receive a CAB vehicle speed signal during the CCM Rationality test. Possible Causes: Check for a CAB controller code related to the VSS signal CAB (ABS) controller has failed VSS signal is open, shorted to ground or shorted to power ECM or PCM has failed
P0503 1T or 2T CCM 2004-05 Ram Vehicle Speed Sensor No. 1 Erratic Performance Conditions: Ignition is on; battery voltage over 10v; transmission in Drive or Reverse; brakes not applied. Vehicle speed signal is erratic during road load conditions. One-trip fault for ETC vehicles; Two-trip fault for ETC vehicles. 3 good trips required to turn off MIL. Possible Causes: Check for active Bus or Communication DTCs Incorrect Tire Circumference PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0505 2T IAC 2001-05 Ram Idle Air Control Motor Circuit Conditions: Engine started; system voltage over 11.5v and the PCM detected an unexpected voltage condition on one or more of the IAC motor circuits for 2.75 seconds (exc. Viper) or for 100ms (Viper), with the IAC motor active. Possible Causes: Stepper motor Coil No. 1, 2, 3 or 4 circuit open or shorted to ground Stepper motor coil circuit(s) shorted to system power (B+) Stepper motor is damaged or has failed PCM has failed
P0506 1T CCM 2002-03 Ram Idle Speed Low Performance Conditions: Engine running at idle speed in closed loop, and the PCM detected the actual idle speed was not within the expected low idle speed limit when compared to the target idle speed limit. Possible Causes: Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking
OBD II Trouble Code List (P0XXX Codes) - Continued

P0506 1T CCM 2004-05 Ram Idle Speed Low Performance Conditions: Engine running at idle speed; MAF is less than 250 mg/tdc; air temperature is greater than 0F (-18C) and less than 19F (-7C) enable after coolant temperature is greater than 158F (70C) or air temperature is greater than 19F (-7C); coolant temperature is between 19 to 266F (-7 to 130C); canister purge is less than 100% duty cycle; no DTCs are present for VSS, MAF/MAP, ECT, TPS, ECT and CKP Sensors; also no fuel system or injector related DTCs are present. If the DTC detects that engine speed is 100 rpm or more below the normal idle speed for 7 seconds, this DTC will set. Possible Causes: Air induction system restrictions Throttle body or linkage is binding, damaged or sticking Intermittent condition PCM has failed
P0507 1T CCM 2001-03 Ram Idle Speed High Performance Conditions: No CKP, ECT, MAF, MAP or VSS codes set, engine started, engine running at idle speed, BTS Sensor from 0-19.4F, ECT Sensor from 158-266F, MAF Sensor under 250 mg, and the PCM detected the Actual speed was 200 rpm above the Target speed for 7 seconds. Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components Intermittent condition PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0507 2T CCM 2004-05 Ram Idle Speed High Performance Conditions: Engine running at idle speed in closed loop. If engine rpm does not come within a calibratable high limit of the target idle speed, a failure timer will increment. When the appropriate failure timer reaches its maximum threshold without sign of rpm trending toward control, a soft-fail is generated. When a calibratable number of the soft-fails is reached, a 1-trip fault is set. When two 1-trip faults occur in a row, the DTC is set and the MIL illuminates. Possible Causes: PCV system malfunction Air induction system restrictions (clogged air filter, etc.) Idle air control passage is clogged or dirty (clean and retest) Air induction system malfunction Throttle body or linkage is binding, damaged or sticking
P0507 1T CCM 2004-05 Ram Idle Speed High Performance Higher Than Expected Conditions: Engine running at idle speed; MAF is less than 250 mg/tdc; air temperature is greater than 0F (-18C) and less than 19F (-7C) enable after coolant temperature is greater than 158F (70C) or air temperature is greater than 19F (-7C); coolant temperature is between 19 to 266F (-7 to 130C); canister purge is less than 100% duty cycle; no DTCs are present for VSS, MAF/MAP, ECT, TPS, ECT and CKP Sensors; also no fuel system or injector related DTCs are present. If the DTC detects that engine speed is 200 rpm or more above the normal idle speed for 7 seconds, this DTC will set. Possible Causes: Air induction system restrictions (clogged air filter, etc.) Vacuum leaks Intermittent condition Throttle body or linkage is binding, damaged or sticking PCM has failed
P0508 2T CCM 2001-05 Ram Idle Air Control Motor Sense Circuit Low Input Conditions: Engine started; system voltage over 10.5v; IAC motor operating. The PCM detected the IAC Motor Sense circuit current was less than 175mA during the CCM test period. Possible Causes: IAC motor driver circuit is open or shorted to ground IAC motor sense circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed
P0508 1 CCM 2004-05 Ram Idle Air Control Motor Sense Circuit Low Input Conditions: Engine running; system voltage over 10v; IAC motor operating. The PCM senses an open or short to ground on any of the Linear Idle Air Control (LIAC) control circuits for 2.75 seconds while the IAC motor is active. 3 good trips are required to turn off the MIL. Possible Causes: IAC motor control circuit is open or shorted to ground IAC motor signal circuit is open or shorted to ground IAC motor is damaged or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0509 2T CCM 2001-05 Ram Idle Air Control Motor Circuit High Conditions: Engine started; system voltage over 10.5v, IAC motor activated, and the PCM detected a high voltage on one or more of the IAC motor circuits (over 980mA) during the CCM test period. Possible Causes: IAC motor driver circuit is shorted to power IAC motor sense circuit is shorted to power IAC motor is damaged or it has failed PCM has failed
P0509 1 CCM 2004-05 Ram Idle Air Control Motor Sense Circuit High Conditions: Engine running; system voltage over 10v; IAC motor operating. The PCM senses a short-to-power on any of the Linear Idle Air Control (LIAC) control circuits for 2.75 seconds while the IAC motor is active. 3 good trips are required to turn off the MIL. Possible Causes: IAC motor control circuit is shorted to battery power IAC motor signal circuit is open or shorted to battery power IAC control circuit is shorted to IAC return circuit IAC motor is damaged or it has failed PCM has failed
P0513 1T PCM 2001-05 Ram Invalid SKIM Key Detected Conditions: Key on, and the PCM detected an invalid Sentry Key Immobilizer key had been inserted into the ignition key assembly. Possible Causes: Incorrect VIN in the PCM No communication between the PCM and the SKIM SKIM trouble codes present (check for any SKIM codes) Valid SKIM key not present VIN not programmed into the PCM PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0516 1T CCM 2003-05 Ram Battery Temperature Sensor Circuit Low Input Conditions: Key on or engine running; and the PCM detected a Battery Temperature Sensor signal that indicated less than 0.10v (exc. Ram, Liberty) or less than 0.039v (Ram, Liberty). 3 good trips required to turn off MIL. Possible Causes: BTS signal circuit is shorted to Sensor or chassis ground BTS assembly is damaged or it has failed PCM has failed
P0517 1T CCM 2003-05 Ram Battery Temperature Sensor Circuit High Input Conditions: Key on or engine running; and the PCM detected a Battery Temperature Sensor signal that indicated more than 4.8v (exc. Ram, Liberty) or more than 4.94v (Ram, Liberty). Possible Causes: BTS signal circuit is shorted to VREF (5v) BTS signal circuit is open or the BTS ground circuit is open BTS assembly is damaged or it has failed PCM has failed
P0519 2T IAC 2002-03 Ram Idle Air Performance Conditions: DTC P0106, P0107, P0108, P0121, P0122 and P0123 not set, engine started, engine running with the gear selector indicating Drive position, and the PCM detected the engine idle speed was not within 200 rpm of the high idle limit or within 100 rpm of the low idle limit when compared to the Target Idle Speed limit for 40 seconds. Possible Causes: Idle air control passage is clogged or dirty (clean and retest) Throttle body or linkage is binding, damaged or sticking Vacuum leaks in the engine or PCV system components
OBD II Trouble Code List (P0XXX Codes) - Continued

P0520 1T CCM 2004-05 Ram Engine Oil Pressure Sensor Out of Range Conditions: Key on (engine not started). The PCM detected an engine oil pressure reading out of the calibrated range. Possible Causes: Oil pressure Sensor signal circuit is open or shorted to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor ground circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed
P0521 1T CCM 2004-05 Ram Engine Oil Pressure Sensor Does Not Reach Range Conditions: Engine running. The PCM detected an engine oil pressure reading never reaches the calibrated specification when engine is at 1250 rpm. Possible Causes: Engine oil or engine mechanical fault Oil pressure Sensor signal circuit is shorted to battery Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed
P0522 1T CCM 2002-03 Ram with 5.9L Diesel Engine Oil Pressure Sensor Circuit Low Input Conditions: Key on or engine running; system voltage more than 10.4v, and the PCM detected the Oil Pressure Sensor signal was less than 0.10v. Possible Causes: Check for multiple trouble codes set related to this circuit Oil pressure Sensor signal circuit is open or shorted to ground Oil pressure Sensor VREF circuit is open Oil pressure Sensor is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0522 1T CCM 2001-03 Ram Engine Oil Pressure Sensor Rationality Conditions: Key on (engine not started), engine speed (rpm) indicating 0 rpm, and the PCM detected an engine oil pressure reading not within calibrated range. Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed
P0522 1T CCM 2004-05 Ram Engine Oil Pressure Sensor Rationality Conditions: Engine running; battery voltage over 10.4v. If the PCM detected an engine oil pressure voltage reading of less than 0.1v for 0.5 second (Neon, Dakota, Durango, Ram), less than 0.3v (Viper), or less that 0.942v (Liberty), this DTC will set. Possible Causes: 5v supply circuit is open or is shorted to ground Oil pressure Sensor signal circuit is shorted to ground or to sensor ground Oil pressure Sensor is damaged or has failed PCM has failed
P0523 1T CCM 2001-03 Ram Engine Oil Pressure Sensor Rationality Conditions: Key on (engine not started), engine speed (rpm) indicating 0 rpm, and the PCM detected an engine oil pressure reading. Possible Causes: Oil pressure Sensor signal circuit is open Oil pressure Sensor signal circuit is shorted to ground Oil pressure Sensor is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0523 1T CCM 2004-05 Ram Engine Oil Pressure Sensor Circuit High Conditions: Key on (engine not started). The PCM detected an engine oil pressure reading greater than the calibrated amount. Possible Causes: Oil pressure Sensor signal circuit is open or shorted to battery voltage or to 5v supply circuit Oil pressure Sensor ground circuit is open Oil pressure Sensor is damaged or has failed PCM has failed
P0523 1T CCM 2001-03 Ram Engine Oil Pressure Sensor Circuit High Input Conditions: Key on or engine running; system voltage more than 10.4v, and the PCM detected the Oil Pressure Sensor signal indicated more than 4.90v during the CCM test. Possible Causes: Oil pressure Sensor signal circuit is shorted to VREF Oil pressure Sensor ground circuit is open Oil pressure Sensor is damaged or has failed PCM has failed
P0524 1T CCM 2004-05 Ram Engine Oil Pressure Low Conditions: Engine running. The PCM detected that the engine oil pressure never reaches the calibrated specification to allow the MDS activation. Possible Causes: Engine oil system or engine mechanical faults Oil pressure Sensor signal circuit is shorted to battery voltage or to ground Oil pressure Sensor signal circuit has high resistance 5v supply circuit has high resistance 5v supply circuit is shorted to ground Oil pressure Sensor return circuit has high resistance Oil pressure Sensor is damaged or has failed PCM has failed
P0524 1T CCM 2001-03 Ram with 5.9L Diesel Engine Oil Pressure Sensor Signal Too Low Conditions: Key on or engine running; system voltage more than 10.4v, and the PCM detected a signal from the Oil Pressure Sensor that indicated the engine oil pressure was too low. Possible Causes: Engine oil level is very low Oil pressure Sensor is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0532 1T CCM 2002-05 Ram Air Conditioning Pressure Sensor Circuit Low Input Conditions: Engine running with the A/C relay energized. The PCM detected the signal from the A/C Pressure Sensor indicated less than 0.58v for over 2.6 seconds during the CCM test period. Possible Causes: A/C pressure Sensor 5v power supply (VREF) circuit is open or is shorted to ground A/C pressure Sensor signal circuit is shorted to ground or to Sensor ground circuit A/C pressure Sensor is damaged or it has failed Front A/C control module damaged or has failed PCM has failed
P0533 1T CCM 2002-05 Ram Air Conditioning Pressure Sensor Circuit High Input Conditions: Engine running with the A/C relay energized, and the PCM detected the signal from the A/C Pressure Sensor indicated less than 4.92v for over 2.6 seconds during the CCM test period. Possible Causes: A/C pressure Sensor signal circuit is shorted to 5v VREF power A/C pressure Sensor signal circuit or ground circuit is open A/C pressure Sensor is damaged or it has failed Front A/C control module is damaged or has failed PCM has failed
P0545 1T CCM 2001-02 Ram with V8 Air Conditioning Clutch Circuit Failure Conditions: Key on or engine running; and the PCM detected an unexpected voltage condition on the A/C clutch control circuit in the CCM test. Possible Causes: A/C clutch control circuit is open between the clutch and PCM A/C clutch control circuit is shorted to ground A/C clutch power circuit is open A/C clutch or PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0551 1T CCM 2001-03 Ram Power Steering Pressure Switch Circuit Failure Conditions: Vehicle driven at more than 56 mph for more than 30 seconds and the PCM detected a high voltage input on the PSPS circuit (pressure exceeds 500 psi). This is a normally open switch. Possible Causes: PSPS sense circuit is shorted to ground PSPS is damaged or has failed PCM has failed
P0551 1T CCM 2004-05 Ram Power Steering Pressure Switch Circuit Failure Conditions: Engine running and vehicle driven at more than 40 mph for 30 seconds. If the PCM detected the PSPS signal remains open for 2 consecutive trips, this DTC will set. 3 good trips required to turn off MIL. Possible Causes: PSPS sense circuit is open between the switch and the PCM PSPS ground circuit is open between the switch and ground PSPS is damaged or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0562 1T CCM 2001-03 Ram Battery Sense Circuit Low Input Conditions: Engine running at a speed over 380 rpm, and the PCM detected the Battery Sense circuit voltage indicated one volt less than the Charging system "goal" (11.50v) for 13.47 seconds. Possible Causes: Battery sense circuit has a high resistance condition Generator ground circuit has a high resistance condition Generator field ground circuit is open Generator field control circuit is open or shorted to ground Generator is damaged or it has failed PCM has failed
P0562 1T CCM 2004-05 Ram Battery Voltage Low Input Conditions: Engine running at a speed over 1000 rpm. If battery voltage is 1v less than desired voltage for a set period of time, this DTC will set. The ETC light is flashing. Possible Causes: Resistance in battery positive circuit Resistance in the generator case ground Generator field ground circuit is open or shorted to ground Generator is damaged or it has failed Ground circuit is open PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0562 1T CCM 2001-03 Ram with 5.9L Diesel Charging System Voltage Low Input Conditions: Engine started; engine speed over 1000 rpm during testing, and the PCM detected the system voltage was less than 6.0v at any time. Possible Causes: Battery connections corroded (high resistance) or loose Ignition system voltage circuit is open at the PCM terminals Generator is damaged or has failed (output is too low) PCM has failed
P0563 1T CCM 2001-05 Ram Battery Sense Circuit High Input Conditions: Engine running at a speed over 380 rpm, and the PCM detected the Battery Sense circuit voltage indicated 1v higher than the Charging system "goal" during the CCM test. Possible Causes: Generator field control circuit is shorted to system power (B+) Generator is damaged or it has failed PCM has failed
P0563 1T CCM 2004-05 Ram Battery (Charging System) Voltage High Input Conditions: Engine running at a speed over 1000 rpm. No other charging system codes are set. If battery voltage is 1v more than desired voltage for a set period of time, this DTC will set. 3 good trips required to turn off MIL. Possible Causes: Intermittent condition Generator field ground circuit is shorted to battery voltage Generator is damaged or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0563 1T CCM 2001-03 Ram with 5.9L Diesel Charging System Voltage High Input Conditions: Engine started; engine speed over 1000 rpm during the test period, and the PCM detected the system voltage was more than 17.0v at any time during the CCM test. Possible Causes: Generator is damaged or has failed (output is too high) PCM has failed
P0571 1T CCM 2004-05 Ram Brake Switch No. 1 No Output Signal Conditions: Ignition is on. If output of BS 1 to PCM looks like brake is not applied, while BS 2 circuit is applied, the fault will mature in 60ms. Possible Causes: BS 1 signal open or shorted to ground BS 2 signal open or shorted to ground Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed
P0572 1T CCM 2001-03 Ram with 5.9L Diesel Brake Switch No. 1 Signal Circuit Failure Conditions: Vehicle driven at over 55 mph for 1 minute, and then returned to idle speed, test performed at least 10 times, and the PCM did not detect any change in the Brake Switch No. 1 signal. Possible Causes: Brake switch signal circuit to open or shorted to ground Brake switch power circuit is open Brake switch is damaged or has failed PCM has failed
P0572 1T CCM 2004-05 Ram Brake Switch Signal No. 1 Circuit Low Conditions: Ignition is on. When PCM recognizes that brake switch is mechanically stuck in the low/on position, a DTC will set. Three global good trips are necessary to turn off MIL. Possible Causes: Brake switch signal circuit is shorted to ground BS No. 2 signal open (5.7L) Brake switch is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0573 1T CCM 2001-03 Ram with 5.9L Diesel Brake Switch Signal No. 2 Circuit Malfunction Conditions: Engine started; engine running and the PCM did not detect any Brake Switch No. 2 signals on the CCD Bus circuit during the test. Possible Causes: Brake switch signal to the PCM is missing (circuit problem) CCD Bus circuit is open or shorted to ground CCD Bus circuit is shorted to system power Generator field control circuit shorted to battery voltage PCM has failed
P0573 1T CCM 2004-05 Ram Brake Switch No. 1 Stuck High/Off Conditions: Ignition is on. If PCM recognizes BS No. 11 is mechanically stuck in the high/off position, this DTC will set. Possible Causes: BS No. 2 signal open or shorted to ground BS No. 1 signal shorted to ground or to voltage Ground circuit is open Fused ignition switch output is open Stop lamp switch is damaged or has failed PCM has failed
P0575 1T CCM 2001-03 Ram with 5.9L Diesel Cruise Control Switch Signal Low Input Conditions: Engine started; engine running and the PCM detected a continuous "low" voltage condition on the Cruise Control switch circuit. Possible Causes: C/C switch signal shorted to ground between switch and PCM C/C clockspring is shorted to ground C/C switch is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0576 1T CCM 2001-03 Ram with 5.9L Diesel Cruise Control Switch Signal High Input Conditions: Engine started; engine running and the PCM detected a continuous "high" voltage condition on the Cruise Control switch circuit. Possible Causes: C/C switch circuit is open or shorted to VREF or system power C/C switch or clockspring ground circuit is open C/C switch is damaged or has failed PCM has failed
P0577 1T CCM 2001-03 Ram with 5.9L Diesel Cruise Control Switch Signal High Input Conditions: Engine started; engine running and the PCM detected a continuous "high" voltage condition on the Cruise Control switch circuit. Possible Causes: C/C switch circuit is open or shorted to VREF or system power C/C switch or clockspring ground circuit is open C/C switch is damaged or has failed PCM has failed
P0579 1T CCM 2002-03 Ram Speed Control Switch No. 1 Performance Conditions: Engine started; and the PCM detected a continuous invalid voltage condition on the Speed Control Switch No. 1 signal. Possible Causes: S/C switch signal circuit is shorted to chassis or Sensor ground S/C switch signal circuit is open or shorted to system power S/C switch is damaged or it has failed Sensor ground circuit is open PCM has failed
P0579 1T CCM 2004-05 Ram with 5.7L Speed Control Switch No. 1 Performance Conditions: Ignition on. The PCM detected the cruise switch voltage output is not out of range, but it does not equal any of the values for any of the button positions. Possible Causes: S/C switch No. 1 signal circuit is open or shorted to battery voltage S/C switch No. 1 signal circuit is shorted to ground or to switch return circuit S/C switch No. 1 switch return circuit is open Clockspring or S/C switch is damaged or it has failed PCM has failed
P0580 1T CCM 2002-05 Ram Speed Control Switch No. 1 Circuit Low Input Conditions: Key on or engine started; system voltage over 10.0v and the PCM detected the Speed Control Switch No. 1 signal indicated less than 0.43v (exc. Liberty) or 0.60v (Liberty) for 2 minutes. 3 good trips required to turn off MIL. Possible Causes: Intermittent condition S/C switch signal circuit is shorted to chassis or Sensor ground S/C On/Off switch is damaged or it has failed S/C Resume/Accel switch is damaged or it has failed PCM has failed.
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0580 1T CCM 2002-05 Ram with 5.7L Speed Control Switch No. 1 Circuit Low Input Conditions: Key on. The PCM detected the Speed Control Switch No. 1 signal is below the minimum acceptable voltage. Possible Causes: S/C switch No. 1 signal circuit is shorted to S/C switch return circuit S/C switch No. 1 signal circuit is shorted to ground Clockspring is damaged or it has failed Speed control switch No. 1 has failed PCM has failed
P0581 1T CCM 2002-05 Ram Speed Control Switch No. 1 Circuit High Input Conditions: Engine started; system voltage over 10v and the PCM detected an open or shorted condition, or above maximum acceptable S/C switch voltage, in the Speed Control Switch signal circuit. Possible Causes: S/C switch No.1 signal circuit is shorted to system power (B+) S/C switch ground circuit is open S/C switch signal circuit is open between PCM and clockspring S/C Sensor ground circuit is open between PCM and clockspring or clockspring and S/C switch Clockspring has failed S/C switch (one or more) is damaged or has failed PCM has failed
P0582 1T CCM 2002-05 Ram Speed Control Vacuum Solenoid Circuit Malfunction Conditions: Ignition on or engine started; Speed Control (S/C) system activated, and the PCM detected an open or short to voltage condition on the S/C Vacuum solenoid circuit during the CCM test period. Possible Causes: S/C supply circuit is open or is short to ground or to battery voltage S/C vacuum solenoid control circuit is open S/C vacuum solenoid control circuit is shorted to ground S/C vacuum solenoid is damaged or has failed PCM has failed
P0585 1T CCM 2004-05 Ram with 5.7L Speed Control Vacuum Solenoid Circuit Malfunction Conditions: Ignition on; Speed Control (S/C) system activated. The PCM detected the C/S switch inputs are not coherent with each other; for example, the PCM is reading C/S switch No. 1 as Accel and switch No. 2 as Coast at the same time. Possible Causes: S/C signal circuits shorted to battery voltage High resistance in the S/C switch signal or return circuits S/C switch No. 1 signal circuit is shorted to switch No. 2 signal circuit S/C signal circuits shorted to ground Clockspring is damaged or has failed S/C switch(es) has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0586 1T CCM 2002-05 Ram Speed Control Vent Solenoid Circuit Malfunction Conditions: Engine started; battery voltage over 10v; Speed Control (S/C) system activated. The PCM detected an unexpected voltage condition on the S/C Vent solenoid circuit during the CCM test period. Possible Causes: S/C supply circuit is open or is short to ground S/C vent solenoid control circuit is open S/C vent solenoid control circuit is shorted to ground S/C vent solenoid is damaged or has failed PCM has failed
P0591 1T CCM 2004-05 Ram Speed Control Switch No. 2 Malfunction Conditions: Ignition on; Speed Control (S/C) system activated. The PCM detected S/C switch No. 2 output voltage is not out of range, but it does not equal any of the values for any of the button positions. Possible Causes: S/C switch No. 2 signal circuit is open or is shorted to ground or to battery voltage S/C return circuit is open S/C switch No. 2 signal circuit is shorted to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed
P0592 1T CCM 2004-05 Ram Speed Control Switch No. 2 Circuit Low Conditions: Ignition on; Speed Control (S/C) system activated. The PCM detected S/C switch No. 2 input voltage is below minimum acceptable voltage at the PCM. Possible Causes: S/C switch No. 2 signal circuit is shorted to ground or to switch return circuit S/C switch No. 2 has failed Clockspring has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0593 1T CCM 2004-05 Ram Speed Control Switch No. 2 Circuit High Conditions: Ignition on; Speed Control (S/C) system activated. The PCM detected S/C switch No. 2 input voltage is above maximum acceptable voltage at the PCM. Possible Causes: S/C switch No. 2 signal circuit shorted to voltage or open between PCM and clockspring S/C switch No. 2 signal circuit is open between the clockspring and S/C switch S/C switch return circuit is open between PCM and clockspring or S/C switch S/C switch No. 2 or clockspring has failed PCM has failed
P0594 1T CCM 2002-05 Ram Speed Control Servo Power Circuit Malfunction Conditions: Engine started; Speed Control (S/C) system activated. The PCM detected an unexpected voltage condition on the S/C Vent solenoid circuit during the CCM test period. Possible Causes: S/C solenoid or vent solenoid has failed Brake switch is damaged or it has failed S/C brake switch circuit is open or it is shorted to ground S/C power circuit is open or it is shorted to ground PCM has failed
P0600 1T PCM 2001-03 Ram PCM Internal Failure, No SPI Communications Conditions: Key on, system voltage over 10.5v and the PCM detected the initial serial data communications attempt failed 8 times in succession. Possible Causes: Turn the key off. Remove the PCM connector(s) and inspect the wiring harness connector pins and PCM pins for damaged, bent or missing pins. If any problems are located, make the repair and then perform the PCM Reset function. If this code resets after the repairs are made, the PCM has failed. PCM needs to be replaced, and then reprogrammed
P0600 1T PCM 2004-05 Ram Serial Communication Link Malfunction Conditions: Ignition on. Internal Bus communication failure is recognized between engine and transmission processors. Possible Causes: PCM or SPI failure
OBD II Trouble Code List (P0XXX Codes) - Continued

P0601 1T PCM 2001-03 Ram PCM Random Access Memory Failure, Self-Test Failed Conditions: Key on, system voltage over 10.5v and the PCM detected the Random Access Memory (RAM) test failed in the initial Self-Test. Possible Causes: PCM needs to be replaced, and then reprogrammed
P0601 1T PCM 2004-05 Ram PCM Internal Controller Failure Conditions: Ignition on. Internal CHECKSUM (or Bus communication) for software has failed; no communication between processors; cannot match calculated value. Possible Causes: PCM or SPI failure
P0602 1T PCM 2001-03 Ram with 5.9L Diesel PCM Fueling Calibration Conditions: Key on or engine starting, and the PCM detected one or more parameters was out-of-range for over one (1) second during testing. Possible Causes: PCM needs to be replaced, and then reprogrammed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0604 1T PCM 2001-03 Ram TCM Random Access Memory Failure, Self-Test Failed Conditions: Key on, system voltage over 10.5v and the TCM detected the Random Access Memory (RAM) test failed during the initial Self-Test. Possible Causes: TCM needs to be replaced, and then reprogrammed
P0605 1T PCM 2001-03 Ram TCM Random Access Memory Failure, Self-Test Failed Conditions: Key on, system voltage over 10.5v and the TCM detected the Read Only Memory (ROM) test failed during the initial Self-Test. Possible Causes: TCM needs to be replaced, and then reprogrammed
P0606 1T PCM 2004-05 Ram Engine Control Module Processor Malfunction Conditions: Engine running. When the PCM detected an internal failure to communicate with the ECM, or the CMP and CKP Sensor count periods are too short, the DTC will set. The ETC light will be flashing. Possible Causes: PCM has failed
P0606 1T PCM 2002-03 Ram with 5.9L Diesel Powertrain Control Module Malfunction Conditions: Key on or engine running; and the PCM detected an internal malfunction had occurred during the initialization step. Possible Causes: PCM needs to be replaced, and then reprogrammed
OBD II Trouble Code List (P0XXX Codes) - Continued

P060B 1T PCM 2004-05 Ram Engine Temperature Control A-D Ground Malfunction Conditions: When throttle motor is powered, if A to D reading does not return to ground within a set period of time from the test activation, this DTC will set. The test typically runs a couple of times per second, and is the reason why the APP2 signal spikes to ground a couple of times per second in normal running. Reprogramming the module may not always fix this fault. The ETC lamp will flash. Possible Causes: PCM need to be reprogrammed PCM has failed
P060D 1T PCM 2004-05 Ram Engine Temperature Control Level 2 Performance Conditions: When throttle motor is powered and no matured faults related to APP Sensors are present. When secondary software determines that APPS 1 and APPS 2 signals do not match for a period of time, this DTC will set. The ETC lamp will flash. Possible Causes: PCM need to be reprogrammed PCM has failed
P060E 1T PCM 2004-05 Ram Engine Temperature Control Level 2 TPS Performance Conditions: When throttle motor is powered and no matured faults related to TP Sensors are present. When secondary software determines that TP Sensor No. 1 and TP Sensor No. 2 signals do not match for a period of time, this DTC will set. The ETC lamp will flash. Possible Causes: PCM need to be reprogrammed PCM has failed
P060F 1T PCM 2004-05 Ram Engine Temperature Control Level 2 ETC Performance Conditions: When throttle motor is powered and no matured faults related to ETC Sensor is present. When secondary software determines that ETC Sensor signal is implausible for a period of time, this DTC will set. The ETC lamp will flash. Possible Causes: PCM need to be reprogrammed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0613 1T PCM 2002-03 Truck, Van models TCM Internal Failure Conditions: Key on, system voltage over 10.5v and the TCM detected an internal failure (possible open condition in the TCM ground circuit). Possible Causes: Turn the key off. Remove the TCM connector(s) and inspect the wiring harness connector pins and TCM pins for damaged, bent or missing pins. Make repairs as needed. Then perform the TCM Reset function. If the code resets, the PCM has failed.
P061C 1T PCM 2004-05 Ram Engine Temperature Control Level 2 RPM Performance Conditions: When throttle motor is powered, and no CMP or CKP electrical signal related DTCs are set, if the secondary software determines that the engine speed is implausible for a period of time, this DTC will set. The ETC lamp will flash. Possible Causes: PCM need to be reprogrammed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0622 1T CCM 2001-05 Ram Generator Field Control Circuit Malfunction Conditions: Engine running. The PCM detected the Generator Field control circuit had malfunctioned (PCM tries to regulate the generator field with no result). Possible Causes: Generator field control circuit is open or is shorted to ground Generator field control circuit is shorted to system power (B+) Generator field ground circuit is open Generator is damaged or PCM has failed PCM has failed
P0627 1T CCM 2002-05 Ram Fuel Pump Relay Control Circuit Malfunction Conditions: Engine started; system voltage over 10.5v. The PCM detected an unexpected voltage condition (open or short) on the Fuel Pump relay control circuit during the CCM test period. Possible Causes: Fuel pump relay control circuit is open or is shorted to ground Fuel pump relay control circuit is shorted to system power (B+) Fuel pump relay power circuit (fused ignition) circuit is open Fuel pump relay is damaged or it has failed PCM has failed
P062C 1T PCM 2004-05 Ram Engine Temperature Control Level 2 MPH Performance Conditions: When throttle motor is powered, and no vehicle speed related DTCs are set, if the secondary software determines that the vehicle speed is implausible for a period of time, this DTC will set. The ETC lamp will flash. Possible Causes: PCM need to be reprogrammed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0628 1T CCM 2002-03 Ram Fuel Pump Relay Control Circuit Malfunction Conditions: Engine started; system voltage over 10.5v and the PCM detected an unexpected voltage condition on the Fuel Pump relay control circuit during the CCM test period. Possible Causes: Fuel pump relay circuit is open, shorted to ground or to power Fuel pump relay power circuit (fused ignition) circuit is open Fuel pump relay is damaged or it has failed PCM has failed
P0630 1T CCM 2002-05 Ram VIN Not Programmed Into The PCM Conditions: Key on, and the PCM determined that the Vehicle Identification Number (VIN) had not been programmed into its memory. Possible Causes: Reprogram the correct VIN into the PCM PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0632 1T CCM 2002-05 Ram Odometer Not Programmed Into The PCM Conditions: Key on, and the PCM detected the vehicle mileage had not been programmed into memory. Possible Causes: Reprogram the correct mileage into the PCM PCM has failed
P0633 1T CCM 2002-05 Ram SKIM Key Not Programmed Into The PCM Conditions: Key on, and the PCM determined that the Security Key Immobilizer (SKIM) information had not been programmed into its memory. Possible Causes: Reprogram the SKIM key into the PCM PCM has failed
P0642 1T CCM 2004-05 Ram Sensor Reference Voltage 1 Circuit Low Conditions: Ignition is on. When the PCM recognizes the primary 5v supply circuit voltage is too low, this DTC will set. The ETC light is flashing. Possible Causes: Primary 5v supply shorted to ground Sensor is shorted to ground 5v Sensor has failed PCM has failed
P0643 1T CCM 2004-05 Ram Sensor Reference Voltage 1 Circuit High Conditions: Ignition is on. When the PCM recognizes the primary 5v supply circuit voltage is too high, this DTC will set. The ETC light is flashing. Possible Causes: Primary 5v supply shorted to battery voltage PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0645 1T CCM 2002-05 Ram A/C Clutch Relay Circuit Malfunction Conditions: Engine started; system voltage over 10.0v, A/C switch "on". The PCM detected an unexpected voltage condition (open or shorted condition) on the A/C Clutch relay control circuit during the CCM test. Possible Causes: Internally fused ignition switch output circuit is faulty A/C relay clutch control circuit is open or it is shorted to ground A/C relay clutch power supply (fused ignition) circuit is open A/C relay is damaged or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0652 1T CCM 2004-05 Ram Sensor Reference Voltage 2 Circuit Low Conditions: Ignition is on. When the PCM recognizes the auxiliary 5v supply circuit voltage is too low, this DTC will set. The ETC light is flashing. Possible Causes: Auxiliary 5v supply shorted to ground Sensor is shorted to ground CMP Sensor has failed PCM has failed
P0653 1T CCM 2004-05 Ram Sensor Reference Voltage 2 Circuit High Conditions: Ignition is on. When the PCM recognizes the auxiliary 5v supply circuit voltage is too high, this DTC will set. The ETC light is flashing. Possible Causes: Auxiliary 5v supply shorted to battery voltage PCM has failed
P0660 1T CCM 2002-05 Ram Manifold Tune Valve Solenoid Circuit Malfunction Conditions: Engine started; ASD relay "on", system voltage over 10.0v, and the PCM detected an unexpected voltage condition on the Manifold Tune Valve (MTV) solenoid control circuit. Possible Causes: Fused B+ circuit has failed MTV solenoid/relay circuit is open or it is shorted to ground MTV solenoid/relay circuit is shorted to power MTV solenoid/relay ground circuit is open MTV solenoid/relay is damaged or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0685 1T CCM 2002-05 Ram ASD Relay Control Circuit Malfunction Conditions: Key on; system voltage over 10.0v. The PCM detected an unexpected voltage condition (open or short) on the Automatic Shutdown (ASD) relay control circuit during the CCM test period (ASD actual state is not equal to the desired state). 3 good trips are required to turn off MIL. P0688 may also set. Possible Causes: Fused B+ circuit faults ASD relay connector is damaged, loose or shorted ASD relay control circuit is open or it is shorted to ground ASD power supply (fused B+) circuit is open ASD relay is damaged, has high resistance, or it has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0688 1T CCM 2002-05 Ram ASD Relay Sense Circuit Low Conditions: Key on, ASD relay energized, system voltage over 10.0v, and the PCM did not detect any voltage on the Automatic Shutdown (ASD) Sense circuit during the CCM test period. Possible Causes: ASD relay output circuit is open ASD power supply (fused B+) circuit is open ASD relay is damaged or it has failed Problem in fuse/relay center PCM no start condition PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0700 2T TCM 2001-05 Ram Automatic Transmission Control System Malfunction Conditions: Ignition on or engine started. The PCM received a message over the CCD Bus from the Transmission Control Module (TCM) that it had detected a problem and set a trouble code in memory. Possible Causes: The presence of this code means the TCM detected a problem TCM related Sensor has solenoid is damaged or has failed This code is for information only - check for other TCM codes TCM or PCM has failed
P0703 1T CCM 2001-03 Ram A/T Brake Switch Sense Circuit Malfunction Conditions: Engine started; vehicle driven to over 20 mph with the TP Sensor over 0.02v for 6 seconds, followed by a deceleration period to 0 mph at least 16 times, and the PCM detected the Brake switch signal status was not correct during the acceleration/deceleration periods. Possible Causes: Brake switch signal circuit or the switch ground circuit is open Brake switch is damaged, out of adjustment or has failed PCM has failed
P0703 1T CCM 2004-05 Ram A/T Brake Switch No. 2 Performance Malfunction Conditions: Ignition is on. When the PCM recognizes brake switch No.2 voltage is not equal to applied value at the PCM when brake switch No. 1 is applied, this DTC will set. Note: This could be a normal condition; however, if this condition is seen repeatedly by the PCM, the DTC will be set. Cruise control will not work for the rest of the key cycle. Possible Causes: Fused B+ circuit malfunction Brake switch output circuit is open or is shorted to battery voltage or to ground Brake switch 1 signal circuit is open Brake switch has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0705 1T CCM 2001-03 Ram A/T Check Shifter Signal Circuit Malfunction Conditions: Key on or engine running; and the PCM detected at least three occurrences of an invalid TR Sensor PRNDL signal for over 100 ms. Possible Causes: TR1, T3, T41 or T42 sense circuit is open TR1, T3, T41 or T42 sense circuit is shorted to ground TR1, T3, T41 or T42 Sensor circuit is shorted to system power Transmission Range Sensor is damaged or has failed PCM has failed
P0706 1T CCM 2004-05 Ram A/T Check Shifter Signal Circuit Malfunction Conditions: Key on. After 3 occurrences in one ignition cycle of an invalid PRNDL DDTC which last for more than 0.1 second. NOTE: All indicator lights on the instrument cluster will illuminate boxed when the vehicle engine is not running, ignition on, or engine running in Park or Neutral if a problem exists. Possible Causes: Shifter out of adjustment TRS T1, T3, T41 or T42 sense circuit is open, shorted to ground or to voltage TRS Sensor has failed Intermittent wiring or connector problems PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0711 1T CCM 2001-03 Ram A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Conditions: Engine started; engine runtime over 20 minutes, and the PCM detected the TFT Sensor signal did not increase at least 16°F; or the PCM detected the TFT Sensor indicated more than 260°F with the ECT Sensor signal indicating less than 100°F during the CCM test. Possible Causes: TFT Sensor signal has an intermittent high resistance condition TFT Sensor is damaged, skewed or has drifted out of range PCM has failed
P0711 1T CCM 2004-05 Ram A/T Transmission Fluid Temperature Sensor Signal - No Rise After Startup Conditions: Engine started. This DTC will set when the desired transmission temperature does not reach a normal operation temperature within a given time frame. Time is variable due to ambient temperature at cold engine start: from 35 minutes at 40F (-40C) to 10 minutes at 60F (15C). Possible Causes: Related DTCs will be present Transmission temperature Sensor has failed Intermittent wiring or connector problems PCM has failed
P0712 1T CCM 2001-03 Ram A/T Transmission Fluid Temperature Sensor Low Input Conditions: Engine started and the PCM detected the TFT Sensor signal was under 1.55v for 2.2 seconds. Possible Causes: TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0712 1T CCM 2004-05 Ram A/T Transmission Fluid Temperature Sensor Low Input Conditions: Engine started and the PCM detected the TFT Sensor signal was under 0.078v for 0.45 second. Possible Causes: Related DTCs are present TFT Sensor signal circuit is shorted to ground TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed
P0713 1T CCM 2001-03 Ram A/T Transmission Fluid Temperature Sensor High Input Conditions: Engine started and the PCM detected the TFT Sensor signal was over 3.76v for 2.2 seconds. Possible Causes: TFT Sensor signal circuit is open between the Sensor and PCM TFT Sensor ground circuit is open between Sensor and PCM TFT Sensor is damaged or has failed (it may be open internally) PCM has failed
P0713 1T CCM 2004-05 Ram A/T Transmission Fluid Temperature Sensor High Input Conditions: Engine started and the PCM detected the TFT Sensor signal was over 4.94v for 0.45 second. Possible Causes: Related DTCs are present TFT Sensor signal circuit is open or is shorted to voltage TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed
P0714 1T CCM 2004-05 Ram A/T Transmission Fluid Temperature Sensor Intermittent Conditions: Engine started and the PCM detected the TFT Sensor signal was fluctuating or changes abruptly within a predetermined period of time. Possible Causes: Related DTCs are present TFT Sensor is damaged or has failed (it may be shorted) Intermittent wiring or connector problems PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0715 1T CCM 2001-03 Ram A/T Input Speed Sensor Circuit Malfunction Conditions: Vehicle driven in 1st, 2nd or 3rd gear with Output Speed Sensor (OSS) signals present, and the PCM did not detect any ISS signals less for 1 second with the vehicle in 2nd gear. Possible Causes: ISS signal (+) circuit is open, shorted to ground or to power ISS signal (-) circuit is open, shorted to ground or to power ISS is damaged or has failed (it may be open internally) Overdrive clutch drum lugs are damaged or missing PCM has failed
P0715 1T CCM 2004-05 Ram TCM Input Speed Sensor Circuit Malfunction Conditions: Engine started; the transmission gear ratio is monitored continuously while the transmission is in gear. This DTC will set if there is an excessive change in the Input RPM in any gear. Possible Causes: ISS ground circuit is open or is shorted to voltage ISS signal circuit is open, shorted to ground or to power ISS Sensor is damaged or it has failed Intermittent wiring or connector problems PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0720 1T CCM 2001-03 Ram A/T Output Speed Sensor - Low Output Above 15 MPH Conditions: Engine started; vehicle driven to a speed over 15 mph, and the PCM detected the OSS signal was less than 60 RPM for 2.6 seconds. Possible Causes: OSS signal (+) circuit is open, shorted to ground or to power OSS signal (-) circuit is open, shorted to ground or to power OSS is damaged or has failed (it may be open internally) Parking pawl lugs damaged or missing PCM has failed
P0720 1T CCM 2004-05 Ram TCM Output Speed Sensor Circuit Malfunction Conditions: Engine started; the transmission gear ratio is monitored continuously while the transmission is in gear. This DTC will set if there is an excessive change in the Output RPM in any gear. On some models, this DTC can take up to 5 minutes of problem identification before lighting the MIL. Possible Causes: OSS ground circuit is open or is shorted to voltage or to ground Speed Sensor ground circuit is open, shorted to ground or to voltage OSS Sensor is damaged or it has failed Intermittent wiring or connector problems PCM or TCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0725 1T CCM 2001-05 Ram A/T Engine Speed Sensor Circuit Malfunction Conditions: Engine running; and the PCM detected an Engine Speed Sensor reading of less than 390 rpm or more than 8000 rpm occurred for 2 seconds during the CCM test. Possible Causes: Check for trouble codes related to the CKP Sensor CKP Sensor signal circuit open, shorted to ground or to power CKP Sensor is damaged or has failed (open or shorted) Intermittent wiring or connector problems PCM has failed
P0731 1T CCM 2001-03 Ram A/T Additional Gear Ratio Error In First Gear Conditions: Vehicle driven to a speed of 4-37 mph at more than 500 rpm, gear selector in 1 Gear in Drive, and the PCM detected too much difference in the engine speed and output shaft speed. Possible Causes: U/D and 2/4 pressures less than 105 psi U/D or L/R clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck L/R switch valve stuck in first gear position Transmission has an internal leak (U/D or other seals leaking)
OBD II Trouble Code List (P0XXX Codes) - Continued

P0731 1T CCM 2004-05 Ram A/T Additional Gear Ratio Error In First Gear Conditions: The transmission gear ratio is monitored continuously while the transmission is in gear. If the ratio of the Input RPM to the Output RPM does not match the current gear ratio, this DTC will set. Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present
P0732 1T CCM 2001-03 Ram A/T Additional Gear Ratio Error In Second Gear Conditions: Vehicle driven to a speed of 4-37 mph at more than 500 rpm, gear selector in 2nd Gear in Drive, and the PCM detected too much difference in the engine speed and output shaft speed. Possible Causes: U/D and L/R pressures less than 95 psi at 2000 rpm U/D or 2/4 clutch volume indexes out of specification L/R accumulator seals are damaged or L/R switch valve stuck Transmission has an internal leak (U/D or 2/4 seals leaking) L/R switch valve stuck in first gear position
P0732 1T CCM 2004-05 Ram A/T Additional Gear Ratio Error In Second Gear Conditions: The transmission gear ratio is monitored continuously while the transmission is in gear. If the ratio of the Input RPM to the Output RPM does not match the current gear ratio, this DTC will set. Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present
P0733 1T CCM 2001-03 Ram A/T Additional Gear Ratio Error In Third Gear Conditions: Vehicle driven to a speed of 4-37 mph at more than 500 rpm, gear selector in 3rd Gear in Drive, and the PCM detected too much difference in the engine speed and output shaft speed. Possible Causes: O/D and U/D pressures less than 75 psi O/D or U/D clutch volume indexes out of specification O/D accumulator seals are damaged L/R switch valve stuck in first gear position Transmission has an internal leak (U/D seals leaking)
OBD II Trouble Code List (P0XXX Codes) - Continued

P0733 1T CCM 2004-05 Ram A/T Additional Gear Ratio Error In Third Gear Conditions: The transmission gear ratio is monitored continuously while the transmission is in gear. If the ratio of the Input RPM to the Output RPM does not match the current gear ratio, this DTC will set. Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present
P0734 1T CCM 2001-03 Ram A/T Additional Gear Ratio Error In Fourth Gear Conditions: Vehicle driven to a speed of 4-37 mph at more than 500 rpm, gear selector in 4th Gear in Drive, and the PCM detected too much difference in the engine speed and output shaft speed. Possible Causes: Customer may complain of intermittent 4th gear operation O/D and 2/4 pressures less than 75 psi O/D or 2/4 clutch volume indexes out of specification O/D accumulator seals are damaged Transmission enters "limp in" mode running in 4th gear
P0734 1T CCM 2004-05 Ram A/T Additional Gear Ratio Error In Fourth Gear Conditions: The transmission gear ratio is monitored continuously while the transmission is in gear. If the ratio of the Input RPM to the Output RPM does not match the current gear ratio, this DTC will set. Possible Causes: Related DTCs will be present Transmission solenoid/pressure switch assembly has malfunctioned or failed Internal transmission mechanical problems may exist Intermittent gear ratio errors are present
P0735 1T CCM 2001-05 Ram A/T Gear Ratio Error Fourth Prime Conditions: Vehicle driven any forward Gear, and the TCM detected the ratio of the Input speed to the Output Speed did not match the current Gear Ratio (this test can take up to 5 minutes). Possible Causes: Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent) Transmission has internal problems or damage present
OBD II Trouble Code List (P0XXX Codes) - Continued

P0736 1T CCM 2001-03 Ram A/T Additional Gear Ratio Error In Reverse Gear Conditions: Vehicle driven in Reverse Gear at more than 500 rpm, and the PCM detected the ratio of the Input speed to the Output Speed did not match the current Gear Ratio during the test. Possible Causes: Customer may complain of intermittent Reverse gear operation Related Gear Ratio trouble codes may be stored Transmission has internal problems or damage present
P0736 1T CCM 2004-05 Ram A/T Additional Gear Ratio Error In Reverse Gear Conditions: The transmission gear ratio is monitored continuously while the transmission is in gear. If the ratio of the Input RPM to the Output RPM does not match the current gear ratio, this DTC will set. Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present
P0740 1T CCM 2001-03 Ram A/T Torque Converter Clutch - No RPM Drop At Lockup Conditions: Engine started; vehicle driven at over 1750 rpm at 50 mph for 20 seconds, TCC command at 100%, and the PCM detected the engine speed was not within 60 rpm of ISS speed with the TP angle less than 30 degrees. The test must fail 3 times on one trip to set a code. Possible Causes: Internal transmission component fault (Input or Reaction shaft) Internal transmission leakage (valve body leaking or seal rings) Converter clutch valve or clutch timing valve is sticking TCC assembly has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0740 1T CCM 2004-05 Ram A/T Torque Converter Clutch System Out of Range Conditions: The TCC is in FEMCC or PEMCC, transmission temperature is hot, engine temperature is more than 100F (38C), transmission input speed is more than 1750 rpm, with TPS less than 30. The TCC is modulated by controlling the duty cycle of the L/R solenoid, until the difference between the engine and transmission input speed rpm or duty cycle is within desired range. The DTC is set after the period of 10 seconds and 3 occurrences of either: FEMCC with slip greater than 100 rpm or PEMCC duty cycle is more than 85%. Possible Causes: Related DTCs will be present Internal transmission mechanical problems may exist Intermittent gear ratio errors are present
P0743 1T CCM 2001-03 Ram A/T Torque Converter Clutch Solenoid Circuit Failure Conditions: Key on or engine started, and the PCM detected an unexpected voltage condition on the TCC solenoid control circuit during the test. Possible Causes: TCC power circuit is open between the solenoid and Fused B+ TCC solenoid control circuit is open or shorted to ground TCC solenoid control circuit is shorted to system power TCC solenoid is damaged or has failed PCM has failed
P0748 1T CCM 2001-03 Ram A/T Governor Pressure Solenoid/Transmission Relay Fault Conditions: Engine started, and the PCM detected an unexpected voltage on the GPS control circuit. This solenoid is used to control governor pressure so the transmission can determine shift points. Possible Causes: A/T transmission relay power circuit is open (test power to B+) A/T transmission relay is damaged or has failed Governor pressure solenoid circuit is open or shorted to ground Governor pressure solenoid is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0750 1T CCM 2001-03 Ram A/T Low/Reverse Solenoid Circuit Failure Conditions: Key on, and the PCM detected an unexpected voltage condition on the L/R Solenoid control circuit after the solenoid was enabled and disabled (the PCM checks for an inductive spike). Possible Causes: L/R solenoid control circuit is open or shorted to ground L/R solenoid control circuit is shorted to system power L/R Solenoid is damaged or has failed TCM or PCM has failed
P0750 1T CCM 2004-05 Ram A/T Low/Reverse Solenoid Circuit Failure Conditions: Solenoids are tested initially at power-up, then every 10 seconds thereafter, the solenoids will also be tested immediately after a gear ratio or pressure switch error is detected. 3 consecutive solenoid continuity test failures, or one failure if test is run in response to a gear ratio or pressure switch error. Possible Causes: Related relay DTCs present Transmission control relay output circuit open L/R solenoid control circuit open or shorted to ground or to voltage L/R solenoid/pressure switch assembly has malfunctioned or failed Intermittent wiring and connectors PCM has failed
P0751 1T CCM 2001-03 Ram A/T Overdrive Switch Pressed Low For Over 5 Minutes Conditions: Engine started; engine runtime over 10 seconds and the PCM detected the Overdrive Off Switch indicated "low" for over 5 minutes. Possible Causes: Overdrive Switch Off" circuit is shorted to ground Overdrive Switch is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0753 1T CCM 2001-03 Ram A/T 3-4 Solenoid/Transmission Relay Circuit Failure Conditions: Key on or engine started, and the PCM detected an unexpected voltage condition on the 3-4 Solenoid control circuit during the test. Possible Causes: 3-4 Solenoid control circuit is open or shorted to ground 3-4 Solenoid is damaged or has failed Transmission relay power circuit is open (check the fused B+) Transmission relay is damaged or has failed PCM has failed
P0755 1T CCM 2001-03 Ram A/T 2/4 Solenoid Circuit Failure Conditions: Key on or engine running; and the PCM detected an unexpected voltage condition on the2/4 Solenoid control circuit immediately the solenoid was energized or de-energized. The PCM checks for an inductive spike when the solenoid is turned "on" and then "off". Possible Causes: 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed TCM or PCM has failed
P0755 1T CCM 2004-05 Ram A/T 2/4 Solenoid Circuit Failure Conditions: 2/4 solenoid in monitored initially at power-up, then every 10 seconds thereafter. Also, immediately after a gear ratio or pressure switch error is detected. 3 consecutive solenoid continuity test failures, or one failure if test is run in response to a gear ratio or pressure switch error. Possible Causes: Related DTCs present Transmission control relay output circuit open 2/4 Solenoid control circuit is open or shorted to ground 2/4 Solenoid control circuit is shorted to system power 2/4 Solenoid is damaged or has failed Intermittent wiring or connector problems PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0760 1T CCM 2001-03 Ram A/T Overdrive Solenoid Circuit Failure Conditions: Engine started, and the PCM detected an unexpected voltage condition on the Overdrive solenoid control circuit. The solenoids are tested at power-up and then ever 10 seconds. Possible Causes: O/D Solenoid control circuit is open, shorted to ground or power O/D Solenoid is damaged or has failed TCM relay power circuit to O/D solenoid is open (loss of B+) TCM or PCM has failed
P0760 1T CCM 2004-05 Ram A/T Overdrive Solenoid Circuit Failure Conditions: O/D solenoid in monitored initially at power-up, then every 10 seconds thereafter. Also, immediately after a gear ratio or pressure switch error is detected. 3 consecutive solenoid continuity test failures, or one failure if test is run in response to a gear ratio or pressure switch error. Possible Causes: Related DTCs present Transmission control relay output circuit open O/D Solenoid control circuit is open or shorted to ground O/D Solenoid control circuit is shorted to system power O/D Solenoid is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0765 1T CCM 2001-03 Ram A/T Underdrive Solenoid Circuit Malfunction Conditions: Key on or engine running; and the PCM detected an unexpected voltage condition on the U/D Solenoid control circuit immediately after a Gear Ratio or Pressure Switch error was detected (this code can set due to a single or multiple circuit faults). Possible Causes: U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed TCM or PCM has failed
P0765 1T CCM 2004-05 Ram A/T Underdrive Solenoid Circuit Failure Conditions: U/D solenoid in monitored initially at power-up, then every 10 seconds thereafter. Also, immediately after a gear ratio or pressure switch error is detected. 3 consecutive solenoid continuity test failures, or one failure if test is run in response to a gear ratio or pressure switch error. Possible Causes: Related DTCs present Transmission control relay output circuit open U/D Solenoid control circuit is open or shorted to ground U/D Solenoid control circuit is shorted to system power U/D Solenoid is damaged or has failed Intermittent wiring or connector problems PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0783 1T CCM 2001-03 Ram A/T 3-4 Shift Solenoid - No RPM Drop At Lockup Conditions: Engine started; vehicle driven to over 30 mph, and the PCM did not detect the correct amount of rpm drop after a gear change occurred. Possible Causes: ATF fluid level is burnt, contaminated or low 3-4 Solenoid control circuit is open or shorted (intermittent fault) 3-4 Solenoid is damaged or has failed Transmission oil pan has excessive debris
P0830 1T CCM 2001-03 Ram with M/T Clutch Pedal Depressed Circuit Malfunction Conditions: Engine cranking or vehicle driven to over 15 mph at an engine speed of 1550-2880 rpm with the delta throttle at over 1.1v for 4 seconds, and the PCM detected an unexpected voltage condition on the Clutch Pedal switch circuit (test must fail 5 times during one trip). Possible Causes: CPP switch signal circuit is open or shorted to ground CPP switch power circuit is open (test the power at the PDC) Clutch pedal is damaged or has failed PCM has failed
P0833 1T CCM 2001-03 Ram with M/T Clutch Pedal Released Circuit Malfunction Conditions: Engine cranking or vehicle driven to over 15 mph at an engine speed of 1550-2880 rpm with the delta throttle at over 1.1v for 4 seconds, and the PCM detected an unexpected voltage condition on the Clutch Pedal switch circuit (test must fail 5 times during one trip). Possible Causes: CPP switch signal circuit is open or shorted to ground CPP switch power circuit is open (test the power at the PDC) Clutch pedal is damaged or has failed PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0841 1T CCM 2001-03 Ram Low/Reverse Pressure Switch Sense Circuit Malfunction Conditions: Engine started; vehicle driven in a forward gear, and the PCM detected an unexpected voltage condition on the Low/Reverse Pressure Switch Sense circuit during the CCM test. Possible Causes: L/R pressure switch sense circuit is open or shorted to ground L/R pressure switch sense circuit is shorted to power (B+) L/R pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) TCM has failed
P0841 1T CCM 2004-05 Ram Low/Reverse Pressure Switch Sense Circuit Malfunction Conditions: Switches are monitored whenever engine is running. This DTC will set if one of the pressure switches in open or closed at the wrong time in a given gear. Possible Causes: Related DTCs present Loss of Prime P0944 DTC present Transmission control relay output circuit open L/R switch sense circuit is open or is shorted to ground or to voltage L/R pressure switch is damaged or has failed Intermittent wiring or connector problems PCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0845 1T CCM 2001-05 Ram A/T 2/4 Hydraulic Pressure Test Malfunction Conditions: Engine speed over 1000 rpm, then immediately after a shift event, the PCM detected a failure in one or more of the Pressure Switch circuits (i.e., it tests switches that are not operating). Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed Transmission solenoids/TRS assembly is damaged or have failed TCM relay power circuit to 2/4 switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed
P0846 1T CCM 2001-05 Ram A/T 2/4 Pressure Switch Circuit Malfunction Conditions: Engine started; vehicle driven in a forward gear, and the PCM detected that the 2/4 Pressure Switch circuit indicated open or closed at the wrong time. Related relay DTCs may be present. Possible Causes: 2/4 pressure is incorrect, or internal transmission faults exist 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0850 2T CCM 2001-05 Ram A/T Park/Neutral Switch Performance Conditions: Engine running; gearshift selector in Park, Neutral or Drive position (not Limp-In mode). The PCM detected an invalid Park/Neutral switch state during vehicle operation. Possible Causes: Check for any TCM related codes stored in the TCM controller PCM has failed
P0867 1T CCM 2002-03 Ram A/T Line Pressure Malfunction Conditions: Engine started; vehicle driven, and the PCM detected the Actual Line Pressure was not within 10 psi of the Desired Line pressure. Possible Causes: Check for related trouble codes Check TCM connectors for loose or damaged terminals A/T line pressure is out of range TCM line pressure is out of range
P0868 1T CCM 2002-03 Ram A/T Line Pressure Low Conditions: Engine started; vehicle driven, and the PCM detected the Actual Line Pressure indicated 10 psi less than the Desired Line pressure. Possible Causes: Check for related trouble codes Check TCM connectors for loose or damaged terminals A/T line pressure is out of range TCM line pressure is out of range
OBD II Trouble Code List (P0XXX Codes) - Continued

P0869 1T CCM 2002-03 Ram A/T Line Pressure High Conditions: Engine started; vehicle driven, and the PCM detected the Actual Line Pressure indicated 10 psi more than the Desired Line pressure. Possible Causes: Check for related trouble codes Check TCM connectors for loose or damaged terminals A/T line pressure is out of range TCM line pressure is out of range
P0870 1T CCM 2002-05 Ram A/T Hydraulic Pressure Line Malfunction Conditions: Engine started; vehicle driven at over 1000 rpm, then immediately after a shift, the PCM detected a malfunction in one or more of the Pressure Switch circuits (it detected the switch did not close twice). DTC P0944 may be present. Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open OD Pressure Switch sense circuit is shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged Oil pressure switch is damaged or has failed Intermittent wiring or connector problems exist PCM or TCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0871 1T CCM 2002-05 Ram A/T O/D Pressure Switch Circuit Malfunction Conditions: Engine started; vehicle driven in a forward gear, and the PCM detected that the O/D Pressure Switch circuit indicated open or closed at the wrong time. Possible Causes: Related DTCs may be present O/D pressure is incorrect, or internal transmission faults exist O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed TCM relay power circuit to O/D switch is open (loss of B+) Intermittent wiring or connector problems exist PCM or TCM has failed
P0875 1T CCM 2002-05 Ram A/T U/D Hydraulic Pressure Test Malfunction Conditions: Engine speed over 1000 rpm, then immediately after a shift event, the TCM/PCM detected a fault in one or more of the Pressure Switch circuits (it detected the switch did not close twice). Possible Causes: Check for related line pressure trouble codes Check for related speed ratio and pressure switch codes 5v supply circuit is open or shorted to ground U/D Pressure switch sense circuit is open or shorted to ground or to voltage Excessive debris in the oil pan Line pressure Sensor connector is loose or damaged U/D Oil Pressure Switch is damaged or it has failed TCM has failed Intermittent wiring and connector problems
P0876 1T CCM 2002-05 Ram A/T U/D Pressure Switch Sense Malfunction Conditions: Engine started; vehicle driven in a forward gear, and the PCM detected that the U/D Pressure Switch Sense circuit indicated open or closed at the wrong time during the CCM test period. Possible Causes: U/D pressure is incorrect, or internal transmission faults exist U/D pressure switch circuit is open, shorted to ground or power U/D pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) TCM has failed
P0884 1T CCM 2002-03 Ram A/T U/D Pressure Switch Sense Malfunction Conditions: Engine started; vehicle driven in a forward gear, and the PCM detected that the U/D Pressure Switch Sense circuit indicated open or closed at the wrong time during the CCM test period. Possible Causes: U/D pressure is incorrect, or internal transmission faults exist U/D pressure switch circuit is open, shorted to ground or power U/D pressure switch is damaged or it has failed TCM relay power circuit to L/R switch is open (loss of B+) TCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0884 1T CCM 2002-05 Ram Power-Up Automatic Transmission Speed Malfunction Conditions: Engine started, TCM relay enabled; and the TCM detected a valid forward gear PNDRL signal with the Output Speed more than 800 rpm indicating a vehicle speed of over 20 mph. Note: The TCM has separate powers and grounds specifically to its portion of the PCM. Possible Causes: TCM power supply circuit to direct battery is open TCM power supply circuit to the ignition switch is open TCM power ground circuit is open or the connector is loose TCM has failed
P0888 1T CCM 2004-05 Ram A/T Relay Output Malfunction Conditions: Engine started, TCM relay enabled and monitored continuously. This DTC sets when less than 3v are present at the relay output circuits at the TCM when the TCM is energizing the relay. Note: Due to the integration of the PCM and TCM, the transmission part of the PCM has its own specific power and ground circuits. Possible Causes: Fused B+ circuit is open TC relay output circuit is open or is shorted to ground TC relay control circuit is open or is shorted to ground TC relay ground circuit is open TC relay has failed Intermittent wiring or connector problems exist Transmission solenoid/pressure switch assembly has malfunctioned or failed PCM/TCM has failed
P0890 1T CCM 2001-05 Ram A/T TCM Switched Battery Circuit Malfunction Conditions: Ignition switch position is changed from one position to another. TCM relay "not" energized, and the TCM detected voltage present at any of the Pressure Switch input circuits. Note: Due to the integration of the PCM and TCM, the transmission part of the PCM has its own specific power and ground circuits. Possible Causes: 2/4 switch circuit is shorted to system power (B+) L/R switch circuit is shorted to system power (B+) O/D switch circuit is shorted to system power (B+) TCM switched battery circuit is damaged Intermittent wiring or connector problems exist PCM/TCM has failed
P0891 1T CCM 2001-05 Ram A/T TCM Relay Always On Conditions: Key on or engine cranking; TCM relay "not" energized, and the TCM detected voltage present at the TCM output circuit during the test. Note: Due to the integration of the PCM and TCM, the transmission part of the PCM has its own specific power and ground circuits. Possible Causes: TCM relay output circuit is shorted to system power (B+) TCM relay control circuit is shorted to system power (B+) TCM relay is damaged or it has failed (it may be stuck closed) Intermittent wiring or connector problems exist PCM/TCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

P0897 1T CCM 2001-05 Ram A/T Transmission Fluid Burnt Or Worn Out Conditions: Engine started; vehicle driven, and immediately after a transition from full TCC lockup to partial TCC engagement (for A/C bump prevention), the TCM detected vehicle shutter during engagement. Possible Causes: Automatic transmission fluid is burnt or contaminated Automatic transmission fluid is worn out
P0932 1T CCM 2002-03 Ram A/T Line Pressure Malfunction Conditions: Engine started; vehicle driven in any forward gear, and the TCM detected the Line Pressure Sensor signal was less than 0.20v or more than 4.75v during the CCM test period. Possible Causes: Line pressure Sensor connector is damaged or loose Line pressure Sensor circuit is open or shorted to ground Line pressure Sensor circuit is shorted to VREF (5v) Line pressure Sensor ground circuit is open Line pressure Sensor supply circuit (5v) is open or missing TCM Line Pressure Low or High circuit is open
OBD II Trouble Code List (P0XXX Codes) - Continued

P0944 1T CCM 2002-05 Ram A/T Loss Of Prime Pressure Conditions: Engine started; vehicle driven, and immediately after a slipping condition is detected with the pressure switches "not" indicating pressure, the PCM detected a loss of prime pressure. In effect, the TCM turns "on" available elements to detect if prime pressure exists. The DTC sets if no pressure switches respond. Possible Causes: A/T pressure switch connector is damaged, loose or shorted Invalid PRNDL code (shift lever position error) Automatic transmission fluid level is too low Transmission oil filter is clogged or severely restricted Transmission oil pump is damaged or weak Intermittent wiring or connector problems exist
P0951 1T CCM 2001-03 Ram A/T AutoStick Sensor Circuit Malfunction Conditions: Engine started; vehicle driven, transmission not in AutoStick position, and the TCM that either the Upshift or Downshift switch was closed, or if the Upshift and Downshift switches are closed at the same time. Possible Causes: AutoStick assembly is damaged or has failed AutoStick connector is damaged, loose or shorted Downshift switch circuit is shorted too ground Upshift switch circuit is shorted to ground
P0952 1T CCM 2004-05 Ram A/T AutoStick Sensor Circuit Malfunction Conditions: Engine started; vehicle driven, transmission not in AutoStick position, and the TCM that either the Upshift or Downshift switch was closed (below 0.3v), or if both the Upshift and Downshift switches are closed at the same time. Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed
P0953 1T CCM 2004-05 Ram A/T AutoStick Sensor Circuit High Conditions: The AutoStick circuit is checked every .007 second, with the ignition on and in both AutoStick and non-AutoStick modes. If the TCM detects circuit voltage rises above 4.8v, this DTC will set. Possible Causes: AutoStick assembly is damaged or has failed Intermittent wiring or connector problems exist Downshift sense or Upshift sense circuit is shorted to ground PCM/TCM has failed
OBD II Trouble Code List (P0XXX Codes) - Continued

Grumpy · May 23, 2019

P0987 1T CCM 2002-05 Ram A/T 4C Hydraulic Pressure Test Malfunction Conditions: Engine started; vehicle driven at over 1000 rpm, then immediately after a shift and every minute thereafter. After a shift into a forward gear, with engine speed more than 1000 rpm, the TCM momentarily turns on element pressure to the clutch circuits that dont have pressure to identify the correct pressure switch that closes. If the pressure switch does not close 2 times, this DTC will set. Related line pressure DTCs are present. Possible Causes: Check for related speed ratio and pressure switch codes Excessive debris in the oil pan 5v supply circuit is open or is shorted to ground Transmission Control Relay output circuit is open 4C Pressure Switch sense circuit is shorted to ground or to voltage Line Pressure Sensor connector is loose or damaged 4C Line Pressure Sensor has failed Transmission Solenoid/TRS Assembly has failed Internal transmission problems TCM has failed Intermittent wiring and connector problems
P0988 1T CCM 2002-05 Ram A/T 4C Pressure Switch Sense Circuit Malfunction Conditions: Engine started; vehicle driven in any forward gear, and the PCM detected that the 4C Pressure Switch circuit indicated open or closed at the wrong time during the CCM test. Related Relay DTCs are present. Possible Causes: 4C pressure is incorrect, or internal transmission faults exist 4C Pressure Switch sense circuit is open, shorted to ground or power 4C Pressure Switch is damaged or it has failed TCM Relay power circuit to L/R switch is open (loss of B+) PCM/TCM has failed Intermittent wiring and connector problems
P0992 1T CCM 2001-05 Ram A/T 2/4 & O/D Hydraulic Pressure Test Malfunction Conditions: Engine started; vehicle driven at over 1000 rpm, then immediately after a shift, the PCM detected a malfunction in one or more of the Pressure Switch circuits (it tests the switches that are not operating). If the pressure switch does not close 2 times, the DTC will set. Possible Causes: 2/4 pressure switch circuit is open, shorted to ground or power 2/4 pressure switch is damaged or it has failed O/D pressure switch circuit is open, shorted to ground or power O/D pressure switch is damaged or it has failed Internal transmission faults exist TCM relay power circuit to 2/4 or O/D switch open (loss of B+) PCM/TCM has failed
OBD II Trouble Code List (P1XXX Codes) Continued

P1115 1T CCM 2002-05 Ram General Temperature Sensor Performance Conditions: Engine "off" more than 8 hours, then engine started, ambient temperature above -10°F; and after a calibrated amount of cool-down time, the PCM compares the values from the Ambient Air Temperature (AAT), Engine Coolant Temperature (ECT) and Intake Air Temperature (IAT) Sensors. If the PCM detects that the value of any combination of these Sensors (AAT-IAT, AAT-ECT or ECT-IAT) is less than a calibrated value, it will set this trouble code. Possible Causes: Sensor signal circuit is open or shorted to ground Sensor ground circuit is open or shorted to VREF (5v) One or more of the identified Sensors is out-of-calibration Ambient air temperature Sensor is damaged or it has failed PCM High or Low circuit is damaged or it has failed
OBD II Trouble Code List (P1XXX Codes) Continued

P1192 1T CCM 2001-03 Ram Intake Air Temperature Sensor Circuit Low Input Conditions: Engine started; system voltage over 10.5v and the PCM detected the IAT Sensor signal was less than 0.80v during the CCM test period. Possible Causes: IAT Sensor signal circuit is shorted to ground IAT Sensor is damaged or has failed PCM has failed
P1193 1T CCM 2001-03 Ram Intake Air Temperature Sensor Circuit High Input Conditions: Engine started; system voltage over 10.5v and the PCM detected the IAT Sensor signal was more than 4.90v during the CCM test. Possible Causes: IAT Sensor connector is damaged or it is open IAT Sensor signal circuit is open between the Sensor and PCM IAT Sensor ground circuit is open between the Sensor and PCM IAT Sensor damaged or has failed PCM has failed
OBD II Trouble Code List (P1XXX Codes) Continued

P1195 1T CCM 2001-05 Ram O2 (B1 S1) Circuit Insufficient Activity Conditions: Engine started, vehicle driven with the throttle open at a speed over 18 mph at light engine load for over 5 minutes, ECT Sensor more than 170°F, and the PCM detected the O2 signal switched from 0.39v to 0.60v too few times during the Oxygen Sensor Monitor test. Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance PCM has failed
P1196 1T CCM 2001-05 Ram O2 (B2 S1) Circuit Insufficient Activity Conditions: Engine started, vehicle driven with the throttle open at a speed over 18-55 mph at light engine load for over 5 minutes, ECT Sensor more than 170°F, and the PCM detected the O2 signal switched from 0.39v to 0.60v too few times in the Oxygen Sensor Monitor test. Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance
P1197 1T CCM 1998-2003 Ram with V8 or V10 O2 (B1 S2) Circuit Insufficient Activity Conditions: Engine started, vehicle driven with the throttle open at a speed over 18-55 mph at light engine load for over 5 minutes, ECT Sensor more than 170°F, and the PCM detected the O2 signal switched from 0.39v to 0.60v too few times in the Oxygen Sensor Monitor test. Possible Causes: Base engine mechanical fault affecting more than one cylinder Exhaust leak present in exhaust manifold or exhaust pipes O2 element fuel contamination or has deteriorated O2 signal circuit or ground circuit has high resistance
OBD II Trouble Code List (P1XXX Codes) Continued

P1281 2T ECT 2001-05 Ram Engine Is Cold Too Long Conditions: Engine started, engine runtime more than 20 minutes, and the PCM detected the engine temperature did not exceed 176°F in the period. Possible Causes: Check the operation of the thermostat (it may be stuck open) ECT Sensor signal circuit has high resistance ECT Sensor is damaged or it has failed Inspect for low coolant level or an incorrect coolant mixture
P1282 1T CCM 2001-05 Ram Fuel Pump Relay Control Circuit Malfunction Conditions: Key on or engine started, system voltage over 10.5v, and the PCM detected an unexpected voltage condition on the Fuel Pump Relay control circuit during the CCM test period. Possible Causes: Fuel pump relay control circuit is open or shorted to ground Fuel pump relay power circuit is open (test power from Ignition) Fuel pump relay is damaged or has failed PCM has failed
OBD II Trouble Code List (P1XXX Codes) Continued

P1283 1T CCM 2001-02 Ram with 5.9L Diesel Idle Select Signal Invalid Conditions: Key on and the Fuel Pump Control Module (VP44) detected an invalid Low Idle Select signal from the PCM (ECM controller). Possible Causes: Low idle select signal circuit is open or shorted to ground Low idle select signal circuit is shorted to VREF or to power ECM internal circuit is shorted to ground ECM internal regulator output is more than 6.0v Fuel injection pump is damaged or has failed
P1284 1T CCM 2001-02 Ram with 5.9L Diesel Fuel Injection Pump Battery Voltage Out-Of-Range Conditions: Key on and the Fuel Pump Control Module (VP44) detected an invalid Low Idle Select signal from the PCM (ECM controller). Possible Causes: Fuel injection pump is damaged or has failed
P1285 1T CCM 2001-02 Ram with 5.9L Diesel Fuel Injection Pump Controller Always On Conditions: Engine started, engine running, and the PCM detected the Fuel Injection Pump Controller was in an "always on" condition. Possible Causes: Fuel injection pump relay driver circuit shorted to system power Fuel injection pump relay output circuit shorted to power Fuel injection pump relay is damaged or has failed ECM has failed
P1286 1T CCM 2001-02 Ram with 5.9L Diesel Accelerator Position Sensor Supply Voltage High Input Conditions: Key on or engine running; and the PCM detected the supply voltage circuit to the Accelerator Position (APP) Sensor was too high. Possible Causes: APP Sensor supply voltage circuit is shorted to system power APP Sensor signal circuit is shorted to power APP Sensor ground circuit is open ECM has failed
P1287 1T CCM 2001-02 Ram with 5.9L Diesel Fuel Injection Pump Battery Voltage Out-Of-Range Conditions: Engine started and the PCM detected the Fuel Injection Pump battery voltage was too low. Possible Causes: Fuel injection pump ground circuit is open Generator voltage is less than 12.0v (the Generator has failed) Battery voltage is less than 8.0v (the battery is defective) PCM has failed
OBD II Trouble Code List (P1XXX Codes) Continued

Grumpy · May 23, 2019

P1289 1T CCM 2001-02 Ram Manifold Tuning Valve Control Circuit Malfunction Conditions: Key on or engine cranking; and the PCM detected an unexpected voltage condition on the Manifold Tuning Valve (MTV) control circuit. Possible Causes: MTV control circuit is open between the solenoid and PCM MTV control circuit is shorted to Sensor or chassis ground MTV is damaged or has failed PCM has failed
P1290 1T CCM 2001-02 Ram with CNG VIN T Certified Natural Gas Fuel System Pressure Too High Conditions: Engine started, and the PCM detected the CNG Fuel System was operating outside of its normal operating range during the CCM test. Possible Causes: CNG pressure Sensor signal is skewed CNG fuel system component is damaged or has failed PCM has failed
P1291 1T CCM 2001-02 Ram with 5.9L Diesel No Temperature Rise Detected From The Intake Heaters Conditions: No IAT or IAH Relay codes set. Preheat function completed before startup. Post-heat function active. Engine cranking for less than 5 seconds. Engine runtime over 15 seconds. IAT Sensor from 0-66°F. BTS and IAT Sensors within 10°F of each other. Time between engine preheat period and engine run state is less than 30 seconds. PCM did not detect a temperature increase at the Intake Heaters. Possible Causes: Battery cable from No. 1 Relay to No. 1 Heater is open Battery cable from No. 2 Relay to No. 1 Heater is open Battery cable to the No. 1 Relay is open or has high resistance Battery cable to the No. 2 Relay is open or has high resistance Intake Air Heater Relay is damaged or has failed PCM has failed
OBD II Trouble Code List (P1XXX Codes) Continued

P1292 1T CCM 2001-02 Ram with CNG VIN T Certified Natural Gas Pressure Sensor Circuit Low Input Conditions: Engine started and the PCM detected the CNG Pressure Sensor indicated less than 0.49v. Possible Causes: CNG pressure Sensor signal circuit is shorted to ground CNG pressure Sensor is damaged or has failed PCM has failed
P1294 1T CCM 2001-05 Ram Target Idle Speed Not Reached Conditions: DTC P0106, P0107, P0108, P0121, P0122 and P0123 not set, engine started, running at idle in Drive or Neutral, and the PCM detected the Actual idle speed was more than 200 rpm over or more than 100 rpm less than the Target speed for over 14 seconds. Possible Causes: Engine vacuum leak in a hose, brake booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed
P1294 1T CCM 2001-03 Ram Target Idle Speed Not Reached Conditions: DTC P0106, P0107, P0108, P0121, P0122 and P0123 not set, engine started, engine running at idle in Drive or Neutral, and the PCM detected the Actual idle speed was more than 200 rpm over or more than 100 rpm less than the Target speed for over 14 seconds. Possible Causes: Engine vacuum leak in a hose, Brake Booster or in the engine IAC motor control circuits open or grounded in the wire harness Throttle body dirty or restricted (trying cleaning it and retesting) Throttle linkage or throttle plate not in the correct position PCM has failed
OBD II Trouble Code List (P1XXX Codes) Continued

P1295 1T CCM 2001-02 Ram with 5.9L Diesel 5-Volt VREF Missing To APP Sensor Conditions: Key on or engine running; and the PCM detected the supply voltage circuit to the Accelerator Position (APP) Sensor was too low. Possible Causes: APP Sensor supply voltage circuit is open ACCEL pedal position Sensor is damaged or has failed APP Sensor supply circuit shorted to chassis or Sensor ground PCM has failed
P1296 1T CCM 2001-05 Ram 5-Volt VREF Supply Not Present Conditions: Key on, altitude indicating zero feet above seal level, then the PCM detected the MAP Sensor was near 101 kPa; or with altitude at 1200 feet above sea level, the MAP Sensor was near 88 kPa. Possible Causes: MAP Sensor VREF circuit open between the Sensor and PCM MAP Sensor ground circuit open between the Sensor and PCM MAP Sensor is damaged or has failed PCM has failed
P1297 1T CCM 2001-05 Ram No Change In MAP Signal From Start To Run Transition Conditions: Engine started, and with the engine speed within 64 rpm of the Target idle speed, the PCM detected too small a difference between the BARO and MAP Sensor signals for 8.80 seconds. Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed
OBD II Trouble Code List (P1XXX Codes) Continued

P1297 1T CCM 2001-03 Ram No Change In MAP Signal From Start To Run Transition Conditions: Engine started, and with the engine speed within 64 rpm of the Target idle speed, the PCM detected too small a difference between the BARO and MAP Sensor signals for 8.80 seconds. Possible Causes: Engine vacuum port to MAP Sensor clogged, dirty or restricted MAP Sensor signal is skewed or the Sensor is out-of-calibration MAP Sensor VREF circuit open or grounded (intermittent fault) PCM has failed
P1299 2T IAC 2001-03 Ram Vacuum Leak Present With IAC Valve Fully Seated Conditions: Engine running at idle speed in closed loop, and the PCM detected the MAP Sensor signal did not correlate to the TP Sensor signal under these operating conditions during the test. Possible Causes: Leaking engine vacuum hose, brake booster, or in the engine MAP Sensor is out-of-calibration or skewed TP Sensor is damaged or has failed (perform a sweep test) PCM has failed
P1388 1T CCM 2001-05 Ram Auto Shutdown Relay Control Circuit Malfunction Conditions: Key on or engine cranking; and the PCM detected an unexpected voltage condition on the ASD Relay Control circuit. The ASD Relay coil resistance is 95-105 ohms at 68°F. Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed
P1388 1T CCM 2001-02 Ram with 5.9L Diesel Auto Shutdown Relay Control Circuit Malfunction Conditions: Key on or engine cranking; and the PCM detected an unexpected voltage condition on the ASD Relay Control circuit. The ASD Relay coil resistance is 95-105 ohms at 68°F. Possible Causes: ASD relay control circuit is open between the relay and PCM ASD relay control circuit is shorted to ground ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed
OBD II Trouble Code List (P1XXX Codes) Continued

P1389 1T CCM 2001-05 Ram No Auto Shutdown Relay Output Voltage To PCM Conditions: Engine cranking; and the PCM did not detect any voltage on the ASD Relay Output circuit to the PCM during the CCM test. Possible Causes: ASD relay connector is damaged, loose or shorted ASD relay output circuit is open between the relay and PCM ASD relay power circuit is open (test power from Fused B+) ASD relay is damaged or has failed PCM has failed
P1390 1T CCM 2001-03 Ram Timing Belt Skipped One Tooth Or More Conditions: Engine started, engine running, then with the Inhibit Test not active, the PCM checked the CKP and CMP Sensor alignment. If the PCM detects the CMP Sensor is offset from the CKP Sensor signal by 1 tooth, this trouble code is set. The PCM performs the Inhibit Test whenever the engine is cold, if the engine speed is outside of a given window, or if there is a large change in the MAP Sensor signal. Possible Causes: Camshaft timing is out of specifications Valve timing is out of specifications
P1391 1T CCM 2001-05 Ram CKP Or CMP Sensor Signal Intermittent Conditions: Engine started, engine running, and after every 69-degree CKP Sensor leading edge and trailing signal edge is determined, the PCM updates this data and compares it to the true CMP Sensor port level. If the PCM detects a disagreement between these two values 20 times in succession, this trouble code is set. Possible Causes: Camshaft Sensor is not installed properly Engine valve timing is not within specifications Perform a CKP and CMP Sensor relearn with the scan tool Tone wheel or pulse ring is damaged
P1398 1T CCM 2001-05 Ram Misfire Adaptive Numerator At Limit Conditions: Engine started; ECT Sensor under 75°F; engine runtime over 50 sec.; A/C "OFF"; vehicle speed over 36 mph in 1st gear, or over 65 mph in high gear, followed by a closed throttle decel period. This code sets if the PCM detects one of the CKP Sensor target windows varies more than 2.86% from the reference window. Background - PCM needs to learn any variation in engine machining to detect when a misfire is present. CKP Sensor has 2 40 windows that are 180 apart. The window for Cylinders 1 and 4 is the reference window. It is checked against the window for Cylinders 2 and 3. The PCM checks for any variation to make engine speed adjustments. Possible Causes: Base engine problem (i.e., low cylinder compression) CKP Sensor crankshaft target variation too large CKP Sensor improperly installed or the CKP Sensor has failed CKP Sensor signal circuit open or shorted (intermittent fault) Tone wheel or pulse ring is damaged
OBD II Trouble Code List (P1XXX Codes) Continued

Ford Obdii Codes And Related Info

The Grumpy Grease Monkey mechanical engineer.

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The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.

The Grumpy Grease Monkey mechanical engineer.