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Engine Controls - Tests W/Codes - Testing Expand All (for easy ctrl-f) Collapse All Self-Diagnostics Diagnostic Trouble Codes Diagnostic Trouble Code Identification Table DTC P0102: Mass Airflow (MAF) Sensor DTC P0103: Mass Airflow (MAF) Sensor DTC P0112 Or P0117: Temperature Sensor Test (IAT & ECT) DTC P0112, P0113, P0117, P0118, P1112 Or P1117: Continuous Memory, Temperature Sensor Test (IAT Or ECT) DTC P0113 Or P0118: Temperature Sensor Test (IAT Or ECT) DTC P0121: Throttle Position (TP) Sensor DTC P0122: Throttle Position (TP) Sensor DTC P0123: Throttle Position (TP) Sensor DTC P0125: Excessive Time To Enter Closed Loop DTC P0131 Or P0151: Contaminated Ho2S/Voltage Shift DTC P0133 Or P0153: Fuel Control DTC P0135, P0141 Or P0155: Ho2S Heater Circuit DTC P0136, P1137 Or P1138: Fuel Control DTC P0171, P0172, P0174 Or P0175: Fuel Control DTC P0230: Fuel Pump Relay DTC P0231: Fuel Pump Relay DTC P0232: Fuel Pump Relay DTC P0300, P0301, P0302, P0303, P0304, P0305 Or P0306: Misfire Detection Monitor DTC P0320: Ignition Diagnostic Monitor DTC P0340: Cylinder Identification (CID) Circuit DTC P0350, P0351, P0352, P0353 Or P0354: Integrated Ignition Coil Failure DTC P0401, P1408: EGR Monitor & System DTC P0402: EGR System DTC P0420 Or P0430: Catalyst Efficiency Monitor & Exhaust Systems DTC P0442: Evaporative Emission Purge Flow System DTC P0443: Evaporative Emission Purge Flow System DTC P0446: Evaporative Emission System DTC P0452: Evaporative Emission System DTC P0453: Evaporative Emission System DTC P0445: Evaporative Emission System DTC P0460: Fuel Level Input DTC P0500, P0501, P0503, P1500 Or P1501: Vehicle Speed Sensor (VSS) DTC P0505, P1504 Or P1507: Idle Air Control (IAC) Valve DTC P0603: Powertrain Control Module Malfunction DTC P0703 Or P1703: Brake Pedal Position (BPP) Switch DTC P0704 Or P1709: Clutch Pedal Position (CPP) Switch DTC 1000: OBD-II Monitor Testing Not Complete DTC P1001: Unable To Activate Self-Test/SCP Communication Error Code Not Listed DTC P1100: Mass Airflow (MAF) Sensor DTC P1101: Mass Airflow (MAF) Sensor DTC P1116: Temperature Sensor Test (IAT & ECT) DTC P1120: Throttle Position (TP) Sensor DTC P1121: Throttle Position (TP) Sensor DTC P1124: Throttle Position (TP) Sensor DTC P1125: Throttle Position (TP) Sensor DTC P1127: Ho2S Heater DTC P1128 Or P1129: Ho2S Signals Swapped DTC P1130, P1150: Ho2S Not Switching DTC P1131 Or P1151: Ho2S Not Switching Lean DTC P1132 Or P1152: Ho2S Not Switching Rich DTC P1260: Anti-Theft System DTC P1270: Engine Rpm/Vehicle Speed Limit DTC P1309: Misfire Detection Monitor DTC P1400 Or P1401: EGR System DTC P1405 Or P1406: EGR System DTC P1409: EGR Vacuum Regulator DTC P1450: Vapor Management Valve (VMV) DTC P1451: Canister Vent Solenoid DTC P1460: Wot A/C Cut-Off Except Continuous Memory DTC P1460: Wot A/C Cut-Off Continuous Memory DTC P1464: Wot A/C Cut-Off (WAC) DTC P1505: Idle Air Control (IAC) Valve DTC P1506: Idle Air Control (IAC) Valve DTC P1650 Or P1651: Power Steering Pressure (PSP) Switch DTC P1729 Or P1781: 4WD Shift Control Switch Diagnostic Test Z (Intermittent)