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Engine Controls - Self-Diagnostics Expand All (for easy ctrl-f) Collapse All Introduction Self-Diagnostic System Drive Cycles System Monitors Summary Diagnostic Trouble Code Identification Connector Identification Diagnostic Tests Notes DTC P0101-P0103: Mass Air Flow (MAF) Sensor Circuit DTC P0111-P0113: Intake Air Temperature (IAT) Sensor Circuit DTC P0116-P0118, P0125: Engine Coolant Temperature (ECT) Sensor Circuit DTC P0121-P0123: Throttle Position (TP) Sensor Circuit DTCS P0130-P0133, P0136-P0139, P0150-P0153, P0156-P159, P0171-P0172, P0174-P0175, P1137-P1139, P1157-P1159, P1171-P1172 & P1185-P1196: Ho2S Circuit Malfunction DTC P0181-P0183: Engine Fuel Temperature (Eft) Sensor DTC P0201-P0208 & P1201-P1208: Fuel Injector Circuit Malfunction DTC P0300-P0308: Misfire Detected In One Or More Cylinders DTC P0326-P0328 & P0331-P0333: Knock Sensor (KS) Malfunction DTC P0335 & P0336: Crankshaft Position (CKP) Sensor Malfunction DTC P0340: Camshaft Position (CMP) Sensor Malfunction DTC P0420 & P0430: Catalytic Converter Efficiency Low DTC P0441 & P0443: Pre-Advanced EVAP System Malfunction DTC P0442, P0446, P1440, P1447, P1448 & P1496: Advanced EVAP System Malfunction DTC P0451, P0452 & P0453: Fuel Tank Pressure Sensor Malfunction DTC P0460-P0461: Fuel Level Sensor Malfunction DTC P0500: Vehicle Speed Sensor (VSS) Signal Out Of Range DTC P0506-P0507 & P1508-P1509: Idle Air Control (IAC) Valve DTC P0560, P0562 & P0563: Battery & Charging System Voltage Inconsistent DTC P0605: ECM Data Corrupted DTC P1137-P1139: Primary Ho2S "A" Circuit Malfunction DTC P1157-P1159: Primary Ho2S "B" Circuit Malfunction DTC P1171-P1172: Ho2S Too Lean/Rich Malfunction DTC P1176-P1177: FMFR Correction At Maximum Positive/Negative Valve DTC P1178-P1179: AMFR Correction At Maximum Positive/Negative Valve DTC P1185-P1196: Ho2S Heater Malfunction DTC P1313-P1315: Misfire Detected DTC P1201-P1208: Fuel Injector Circuit Malfunction DTC P1316: Misfire Causing Excessive Emissions DTC P1317-P1318: Rough Road Signal Malfunction DTC P1361-P1364 & P1371-P1374: Ignition Coil Activation Malfunction DTC P1514, P1516, & P1517: Park/Neutral Switch Malfunction DTC P1607: Malfunction Indicator Light (Mil) Malfunction DTC P1621-P1622: Security Signal Malfunction Wiring Diagrams