October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Engine Controls - Self-Diagnostics Expand All (for easy ctrl-f) Collapse All Diagnostic Tests Notes Diagnostic Trouble Code Identification Table DTC P0031: Right Front Ho2S Heater Circuit Low DTC P0032: Right Front Ho2S Heater Circuit High DTC P0037: Ho2S Heater Circuit Low DTC P0038: Ho2S Heater Circuit High DTC P0043: Rear Ho2S Heater Circuit Low DTC P0044: Rear Ho2S Heater Circuit High DTC P0051: Left Front Ho2S Heater Circuit Low DTC P0052: Left Front Ho2S Heater Circuit High DTC P0057: Left Rear Ho2S Heater Circuit Low DTC P0058: Left Rear Ho2S Heater Circuit High DTC P0102: MAF Sensor Input Low DTC P0103: MAF Sensor Input Low DTC P0106: BARO Circuit Problem DTC P0107: BARO Sensor Input Low DTC P0108: BARO Sensor Input High DTC P0111: IAT Circuit Problem DTC P0112: IAT Sensor Input Low DTC P0113: IAT Sensor Input High DTC P0116: ECT Circuit Problem DTC P0117: ECT Sensor Input Low DTC P0118: ECT Sensor Input High DTC P0122: TP Sensor Input Low DTC P0123: TP Sensor Input High DTC P0125: Excessive Time To Enter Closed Loop DTC P0128: Thermostat Stuck Open DTC P0130: Right Front Ho2S Malfunction Or DTC P0150: Left Front Ho2S Malfunction DTC P0134: Right Front Ho2S, No Activity Detected, DTC P0140: Middle Ho2S, No Activity Detected Or DTC P0154: Left Front Ho2S, No Activity Detected DTC P0136: Middle Ho2S Malfunction DTC P0138: Right Rear Ho2S, Input High Or DTC P0158: Left Rear Ho2S, Input High DTC P0140: Right Rear Ho2S, No Activity Detected Or DTC P0160: Left Rear Ho2S, No Activity Detected DTC P0144: Rear Ho2S, Input High DTC P0146: Rear Ho2S, No Activity Detected DTC P0171: Right Bank Fuel Trim Too Lean Or DTC P0174: Left Bank Fuel Trim Too Lean DTC P0172: Right Bank Fuel Trim Too Rich Or DTC P0175: Left Bank Fuel Trim Too Rich DTC P0300: Random Misfire Detected DTC P0301-P0306: Cylinders No. 1-6 Misfire Detected DTC P0325: Knock Sensor Circuit Problem DTC P0335: Crankshaft Position Sensor Circuit Malfunction DTC P0401: EGR Flow Too Low DTC P0402: EGR Flow Too High DTC P0420: Catalytic Converter Efficiency Below Limit (Federal) DTC P0421/P0431: Warm Up Catalytic Converter Efficiency Below Limit (CALIFORNIA) DTC P0442: EVAP System Malfunction, Small Leak Detected DTC P0443: EVAP System, Purge Control Valve Circuit Malfunction DTC P0451: Fuel Tank Pressure Sensor Malfunction DTC P0452: Fuel Tank Pressure Sensor Input Low DTC P0453: Ftp Sensor Input High DTC P0455: EVAP System Malfunction, Block Or Large Leak Detected DTC P0456: EVAP System Malfunction, Small Leak Detected DTC P0461: Fuel Gauge Sending Unit Circuit Malfunction DTC P0462: Fuel Gauge Sending Unit Circuit Input Low DTC P0463: Fuel Gauge Sending Unit Circuit Input High DTC P0464: Fuel Gauge Sending Unit Circuit Performance DTC P0506: Idle Control, Rpm Low DTC P0507: Idle Control, Rpm High DTC P0550: Power Steering Switch Malfunction DTC P0703: Brake Switch Malfunction DTC P1102: MAF Sensor Inconsistent With TP Sensor (Less Than Expected) DTC P1103: MAF Sensor Inconsistent With Engine Speed (More Than Expected) DTC P1122: TP Sensor Stuck Closed (Less Than Expected) DTC P1123: TP Sensor Stuck Open (More Than Expected) DTC P1169: Middle Oxygen Sensor, No Inversion DTC P1170: Right Front Oxygen Sensor, No Inversion Or DTC P1173: Left Front Oxygen Sensor, No Inversion DTC P1250: Pressure Regulator Control (PRC) Solenoid Valve Circuit Malfunction DTC P1309: Pcm Internal Malfunction DTC P1345: Camshaft Position Sensor Circuit Malfunction DTC P1449: Canister Drain Cut Valve (CDCV), Circuit Malfunction DTC P1450: EVAP System Malfunction, Excessive Vacuum DTC P1487: EGR Boost Sensor Circuit Malfunction DTC P1496: EGR Valve Motor Coil No. 1 Open Or Short, DTC P1497: EGR Valve Motor Coil No. 2 Open Or Short, DTC P1498: EGR Valve Motor Coil No. 3 Open Or Short Or DTC P1499: EGR Valve Motor Coil No. 4 Open Or Short DTC P1504: IAC Valve Circuit Malfunction DTC P1512: IMRC Shutter Valve Stuck Closed DTC P1518: IMRC Shutter Valve Stuck Open DTC P1520: IMRC Drive Circuit Malfunction DTC P1562: Pcm Backup Battery Voltage Low DTC P1602: Immobilizer To Pcm Communication Error DTC P1603: Code Word Is Not Registered In Pcm DTC P1604: Key Id Numbers Not Registered In Pcm DTC P1621: Code Word Does Not Match After Engine Crank DTC P1622: Key Id Does Not Match DTC P1623: Code Word Or Key Id Read/Write Error In Pcm DTC P1624: Immobilizer System Communication Counter = 0 DTC P1631: No Generator Output Voltage Signal DTC P1633: Battery Overcharge DTC P1634: Generator Terminal B Circuit Open After Repair Procedure