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Engine Controls - Tests W/Codes Expand All (for easy ctrl-f) Collapse All Introduction Self-Diagnostic System Quick Test Additional System Functions Summary Diagnostic Trouble Code Definition Charts Diagnostic Trouble Code Identification Table Diagnostic Trouble Code Tests ECT Resistance Specifications Diagnostic Trouble Code Charts Notes DTC P0102, P0103, P1100 & P1101: MAF Sensor Circuit Malfunction DTC P0112, P0113 & P1112, P0117, P0118, P0125, P1116 & P1117: (IAT & ECT Sensor Circuit Malfunction) DTC P0121, P0122, P0123, P1120, P1121, P1124 & P1125: TP Sensor Circuit Malfunction DTC P0131, P0133, P0151 & P0153: Ho2S Circuit Malfunction DTC P0135, P0141, P0155 & P1127: Ho2S Heater Circuit Malfunction DTC P0136, P0137 & P0138: Ho2S Circuit Malfunction DTC P0171, P0172, P0174, P0175, P1130, P1131, P1132, P1150, P1151 & P1152: Adaptive Fuel Control Circuit Malfunction DTC P0230, P0231 & P0232: Fuel Pump Primary Or Secondary Circuit Malfunction DTC P0300, P0301, P0302, P0303, P0304, P0305 & P0306: Misfire Detection Monitor Malfunction DTC P0320: Pcm Circuit Malfunction DTC P0340: Camshaft Position Sensor Circuit Malfunction DTC P0350, P0351, P0352, P0353, P1352, P1353, P1354, P1360, P1361, P1362, P1364 & P1365: Ignition Coil Circuit Malfunction DTC P0400: Exhaust Gas RECIRCULATION System Malfunction Differential PFE (DPFE) Sensor Circuit Diagram EVR Solenoid Circuit Diagram DTC P0401 & P1408: EGR System Malfunction DTC P0402: EGR System Malfunction DTC P0420: Catalyst Efficiency Monitor Malfunction DTC P0443: EVAP Canister Purge Solenoid Circuit Malfunction Purge Flow (Pf) Sensor Circuit Diagram DTC P0500, P0503, P1500 & P1501: Vehicle Speed Sensor Circuit DTC P0505, P1504 & P1507: IAC System Circuit Malfunction DTC P0603, P0605 & P1605: Pcm Malfunction DTC P0703 & P1703: Brake On/Off Switch Circuit Malfunction DTC P0704 & P1709: Clutch Pedal Pos. Switch Circuit Malfunction DTC P1000: OBD-II Drive Cycle Malfunction DTC P1001: Data Link Connector Malfunction DTC P1128: Heated Oxygen Sensor Circuit Malfunction DTC P1260: Anti-Theft System Malfunction DTC P1270: Engine Rpm/Vehicle Speed Limiter DTC P1351 & P1358: Pcm - Loss Of Ignition Diagnostic Monitor DTC P1359: Pcm - Loss Of Spark (Spout) Output Signal DTC P1390: Octane Adjust Circuit Malfunction DTC P1400 & 1401: Differential PFE Sensor Circuit Malfunction DTC P1405 & 1406: Differential PFE Sensor Circuit Malfunction DTC P1409: EGR Vacuum Regulator Solenoid Circuit Malfunction DTC P1443: Purge Flow System Circuit Malfunction DTC P1444 & P1445: Purge Flow Sensor Circuit Malfunction DTC P1460: Wot Cut-Off Relay Circuit/DTC P1464 A/C Circuit Malfunction DTC P1505: IAC System Circuit Malfunction DTC P1506: IAC System Circuit Malfunction DTC P1650 & P1651: Power Steering Pressure Switch Circuit Malfunction VREF (Reference Voltage)