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Engine Controls - Self-Diagnostics Expand All (for easy ctrl-f) Collapse All Introduction Component Locations Self-Diagnostic System Fuel System Pressure Release Programming Summary Diagnostic Trouble Code Definitions Connector Identification Diagnostic Tests Notes DTC P0031: 1/1 O2 Sensor Heater Circuit Low, DTC P0032: 1/1 O2 Sensor Heater Circuit High, DTC P0037: 1/2 O2 Sensor Heater Circuit Low, DTC P0038: 1/2 O2 Sensor Heater Circuit High, DTC P0051: 2/1 O2 Sensor Heater Circuit Low Or DTC P0052: 2/1 O2 Sensor Heater Circuit High DTC P0071: Battery Temp Sensor Performance DTC P0107: Map Sensor Voltage Too Low DTC P0108: Map Sensor Voltage Too High DTC P0111: Intake Air Temp Sensor Performance DTC P0112: Intake Air Temp Sensor Voltage Low DTC P0113: Intake Air Temp Sensor Voltage High DTC P0117: ECT Sensor Voltage Too Low DTC P0118: ECT Sensor Voltage Too High DTC P0121: TPS Voltage Does Not Agree With Map DTC P0122: Throttle Position Sensor Voltage Low DTC P0123: Throttle Position Sensor Voltage High DTC P0125: Closed Loop Temp Not Reached DTC P0131: 1/1 O2 Sensor Shorted To Ground, DTC P0137: 1/2 O2 Sensor Shorted To Ground, DTC P0151: 2/1 O2 Sensor Shorted To Ground Or DTC P0157: 2/2 O2 Sensor Shorted To Ground DTC P0132: 1/1 O2 Sensor Shorted To Voltage, DTC P0138: 1/2 O2 Sensor Shorted To Voltage, DTC P0152: 2/1 O2 Sensor Shorted To Voltage Or DTC P0158: 2/2 O2 Sensor Shorted To Voltage DTC P0133: 1/1 O2 Sensor Slow Response, DTC P0139: 1/2 O2 Sensor Slow Response, DTC P0153: 2/1 O2 Sensor Slow Response Or DTC P0159: 2/2 O2 Sensor Slow Response DTC P0135: 1/1 O2 Sensor Heater Failure, DTC P0141: 1/2 O2 Sensor Heater Failure, DTC P0155: 2/1 O2 Sensor Heater Failure Or DTC P0161: 2/2 O2 Sensor Heater Failure DTC P0136: 1/2 O2 Sensor Heater Circuit Malfunction DTC P0171: 1/1 Fuel System Lean Or DTC P0174: 2/1 Fuel System Lean DTC P0172: 1/1 Fuel System Rich Or DTC P0175: 2/1 Fuel System Rich DTC P0201: Injector #1 Control Circuit, DTC P0202: Injector #2 Control Circuit, DTC P0203: Injector #3 Control Circuit, DTC P0204: Injector #4 Control Circuit, DTC P0205: Injector #5 Control Circuit, DTC P0206: Injector #6 Control Circuit, DTC P0207: Injector #7 Control Circuit (4.7L) Or DTC P0208: Injector #8 Control Circuit (4.7L) DTC P0300: Multiple Cylinder Misfire, DTC P0301: Cylinder #1 Misfire, DTC P0302: Cylinder #2 Misfire, DTC P0303: Cylinder #3 Misfire, DTC P0304: Cylinder #4 Misfire, DTC P0305: Cylinder #5 Misfire, DTC P0306: Cylinder #6 Misfire, DTC P0307: Cylinder #7 Misfire (4.7L) Or DTC P0308: Cylinder #8 Misfire (4.7L) DTC P0320: No Crank Reference Signal At Pcm DTC P0325: Knock Sensor #1 Circuit Or DTC P0330: Knock Sensor #2 Circuit DTC P0340: No Cam Signal At Pcm DTC P0351: Ignition Coil #1 Primary Circuit (4.0L), DTC P0352: Ignition Coil #2 Primary Circuit (4.0L) Or DTC P0353: Ignition Coil #3 Primary Circuit (4.0L) DTC P0351: Ignition Coil #1 Primary Circuit (4.7L), DTC P0352: Ignition Coil #2 Primary Circuit (4.7L), DTC P0353: Ignition Coil #3 Primary Circuit (4.7L), DTC P0354: Ignition Coil #4 Primary Circuit (4.7L), DTC P0355: Ignition Coil #5 Primary Circuit (4.7L), DTC P0356: Ignition Coil #6 Primary Circuit (4.7L), DTC P0357: Ignition Coil #7 Primary Circuit (4.7L) Or DTC P0358: Ignition Coil #8 Primary Circuit (4.7L) DTC P0420: 1/1 Catalytic Converter Efficiency Or DTC P0432: 2/1 Catalytic Converter Efficiency DTC P0441: EVAP Purge Flow Monitor Failure DTC P0442: EVAP Leak Monitor Medium (.040") Leak Detected, DTC P0455: EVAP Leak Monitor Large Leak Detected Or DTC P0456: EVAP Leak Monitor Small (.020") Leak Detected DTC P0443: EVAP Purge Solenoid Circuit DTC P0460: Fuel Level Unit No Change Over Miles Or DTC P0461: Fuel Level Unit No Change Over Time DTC P0462: Fuel Level Sending Unit Volts Too Low DTC P0463: Fuel Level Sending Unit Volts Too High DTC P0500: No Vehicle Speed Sensor Signal DTC P0505: Idle Air Control Motor Circuits DTC P0522: Oil Pressure Sensor Volts Low DTC P0523: Oil Pressure Sensor Volts High DTC P0601: Pcm Internal Controller Failure DTC P0700: TCM Controller DTC Present DTC P1195: 1/1 O2 Sensor Slow During Catalyst Monitor Or DTC P1196: 2/1 O2 Sensor Slow During Catalyst Monitor DTC P1281: Engine Is Cold Too Long DTC P1282: Fuel Pump/System Relay Control Circuit DTC P1294: Target Idle Not Reached DTC P1296: No 5 Volts To Map Sensor DTC P1297: No Change In Map From Start To Run DTC P1299: Vacuum Leak Found DTC P1388: Auto Shutdown Relay Control Circuit DTC P1389: No ASD Relay Output Voltage At Pcm DTC P1391: Intermittent Loss Of CMP Or CKP DTC P1398: Misfire Adaptive Numerator At Limit DTC P1486: EVAP Leak Monitor Pinched Hose Found DTC P1491: Rad Fan Control Relay Circuit (4.0L) DTC P1494: Leak Detection Pump SW Or Mechanical Fault DTC P1495: Leak Detection Pump Solenoid Circuit DTC P1499: Hydraulic Fan Solenoid Circuit (4.7L) DTC P1598: A/C Pressure Sensor Volts Too High DTC P1599: A/C Pressure Sensor Volts Too Low DTC P1685: Wrong Or Invalid Key MSG Received From Skim DTC P1686: No Skim Bus Message Received DTC P1696: Pcm Failure EEPROM Write Denied DTC P1698: No Bus Message From TCM DTC P1899: TRS Performance Verification Tests