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 - Tests W/Codes - OBD-II Expand All (for easy ctrl-f) Collapse All Introduction Self-Diagnostic System Scan Tester Problems ECM Location Diagnostic Testing (Es300) Notes Code P0100: Mass Airflow (MAF) Sensor Circuit Code P0101: Mass Airflow (MAF) Sensor Circuit Range/Performance Problem Code P0110: Intake Air Temperature (IAT) Sensor Circuit Code P0115: Engine Coolant Temperature (ECT) Sensor Circuit Code P0116: Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Problem Code P0120: Throttle Position (TP) Sensor Circuit Malfunction Code P0121: Throttle Position (TP) Sensor Circuit Range/Performance Problem Code P0125: Insufficient Coolant Temperature For Closed Loop Fuel Control Code P0130: Heated Oxygen Sensor Fault (Bank No. 1, Sensor No. 1), Code P0150: Heated Oxygen Sensor Fault (Bank No. 2, Sensor No. 1) Code P0133: Heated Oxygen Sensor (Bank No. 1, Sensor No. 1) Circuit Slow Response, Code P0153: Heated Oxygen Sensor (Bank No. 2, Sensor No. 1) Circuit Slow Response Code P0135: Heated Oxygen Sensor Circuit (Bank No. 1, Sensor No. 1), Code P0141: Heated Oxygen Sensor Circuit (Bank No. 1, Sensor No. 2), Code P0155: Heated Oxygen Sensor Circuit (Bank No. 2, Sensor No. 1) Code P0136: Heated Oxygen Sensor Circuit (Bank No. 1, Sensor No. 2) Code P0170: Fuel Trim Malfunction Code P0300: Random Misfire Detected Codes P0301-P0306: Cylinder No. 1-6 Misfire Detected Codes P0325 & P0330: Knock Sensors No. 1 & 2 Circuit Code P0335 Or P1335: Crankshaft Position (CKP) Sensor Circuit Code P0340: Camshaft Position (CMP) Sensor Circuit Code P0401: Insufficient Exhaust Gas RECIRCULATION (EGR) Flow Detected Code P0402: Excessive EGR Flow Detected Code P0420: Catalyst System Efficiency Below Threshold Code P0441: Incorrect EVAP Purge Flow (CALIF. Emission Equipped Models Only) Code P0500: Vehicle Speed Sensor (VSS) Malfunction Code P0505: Idle Control System Malfunction Code P0510: Closed Throttle Position (CTP) Switch Malfunction Code P1300: IGNITOR Circuit Malfunction Code P1500: Starter Signal Circuit Malfunction Code P1600: ECM Batt Malfunction Codes P1605: Knock Control ECM Malfunction Codes P1780: Park/Neutral Position Switch Malfunction Summary Connector Identification