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Engine Control Systems - Tests W/Codes Expand All (for easy ctrl-f) Collapse All Introduction Self-Diagnostic System Specifications Summary Diagnostic Trouble Codes Notes DTC P0100 - MAF Sensor Circuit Insufficient Activity DTC P0101 - MAF Sensor System Performance DTC P0102 - MAF Sensor Circuit Low Frequency DTC P0103 - MAF Sensor Circuit High Frequency DTC P0106 - Map System Performance DTC P0107 - Map Sensor Circuit Low Voltage DTC P0108 - Map Sensor Circuit High Voltage DTC P0112 - IAT Sensor Circuit Voltage Low DTC P0113 - IAT Sensor Circuit Voltage High DTC P0117 - ECT Sensor Circuit Low Voltage DTC P0118 - ECT Sensor Circuit Voltage High DTC P0121 - TP Sensor Circuit Insufficient Activity DTC P0122 - TP Sensor Circuit Low Voltage DTC P0123 - TP Sensor Circuit High Voltage DTC P0125 - ECT Excessive Time To Reach Closed Loop DTC P0131 - Ho2S Circuit Voltage Low Bank 1, Sensor 1 DTC P0132 - Except FLEETWOOD - Ho2S Circuit Voltage High Bank DTC P0132 - FLEETWOOD - Ho2S Circuit Voltage High Bank 1, Sensor 1 DTC P0133 - Ho2S Slow Response Bank 1, Sensor 1 DTC P0134 - Ho2S Insufficient Activity Bank 1, Sensor 1 DTC P0135 - Ho2S Heater Circuit Bank 1, Sensor 1 DTC P0137 - Ho2S Circuit Voltage Low Bank 1, Sensor 2 DTC P0138 - Except FLEETWOOD - Ho2S Circuit Voltage High Bank 1, Sensor 2 DTC P0138 - FLEETWOOD - Ho2S Circuit Voltage High Bank 1, Sensor 2 DTC P0140 - Ho2S Insufficient Activity Bank 1, Sensor 2 DTC P0141 - Ho2S Heater Circuit Bank 1, Sensor 2 DTC P0151 - Ho2S Circuit Voltage Low Bank 2, Sensor 1 DTC P0152 - Ho2S Circuit Voltage High Bank 2, Sensor 1 DTC P0153 - Ho2S Slow Response Bank 2 Sensor 1 DTC P0154 - Ho2S Insufficient Activity Bank 2, Sensor 1 DTC P0155 - Ho2S Heater Circuit Bank 2, Sensor 1 DTC P0157 - Ho2S Circuit Voltage Low Bank 2, Sensor 2 DTC P0158 - Ho2S Circuit Voltage High Bank 2 Sensor 2 DTC P0160 - Ho2S Insufficient Activity Bank 2, Sensor 2 DTC P0161 - Ho2S Heater Circuit Bank 2, Sensor 2 DTC P0171 - Fuel Trim System Lean Bank 1 DTC P0172 - Fuel Trim System Rich Bank 1 DTC P0174 - Fuel Trim System Lean Bank 2 DTC P0175 - Fuel Trim System Rich Bank 2 DTC P0200 - Injector Control Circuit DTC P0300-P0308 - Engine Misfire Detected DTC P0323 - Ignition High/Low Resolution Circuit Intermittent DTC P0325 - Knock Sensor Module Circuit DTC P0327 - Knock Sensor Circuit Bank 1 DTC P0332 - Knock Sensor Circuit Bank 2 DTC P0335 - Crankshaft Position Sensor Circuit DTC P0336 - Crankshaft Position Sensor Circuit Performance DTC P0372 - Ignition High Resolution Circuit DTC P0400 - EGR System DTC P0403 - EGR Solenoid Control Circuit DTC P0410 - Air System DTC P0412 - Air Relay Control Circuit DTC P0420 - TWC System Low Efficiency Bank 1 DTC P0430 - TWC System Low Efficiency Bank 2 DTC P0441 - EVAP System No Flow During Purge DTC P0443 - EVAP Purge Solenoid Control Circuit DTC P0506 - Idle System Low, IAC Responding DTC P0507 - Idle System High, IAC Responding DTC P0530 - A/C Refrigerant Pressure Sensor Circuit DTC P0531 - A/C Refrigerant Pressure Circuit Performance DTC P0562 - System Voltage Low DTC P0563 - System Voltage High DTC P0601 - Pcm Memory DTC P0602 - Pcm Not Programmed DTC P1107 - Map Sensor Circuit Intermittent Low Voltage DTC P1111 - IAT Sensor Circuit Intermittent High Voltage DTC P1112 - IAT Sensor Circuit Intermittent Low Voltage DTC P1114 - ECT Sensor Circuit Intermittent Low Voltage DTC P1115 - ECT Sensor Circuit Intermittent High Voltage DTC P1121 - TP Sensor Circuit Intermittent High Voltage DTC P1122 - TP Sensor Circuit Intermittent Low Voltage DTC P1133 - Ho2S Insufficient Switching Bank 1, Sensor 1 DTC P1134 - Ho2S Transition Time Ratio Bank 1, Sensor 1 DTC P1153 - Ho2S Insufficient Switching Bank 2, Sensor 1 DTC P1154 - Ho2S Transition Time Ratio Bank 2, Sensor 1 DTC P1171 - Fuel System Lean During Acceleration DTC P1222 - Injector Control Circuit Intermittent DTC 1351 - Ic Circuit Voltage High DTC 1361 - Ic Circuit Voltage Low DTC P1371 - Ignition Low Resolution Circuit DTC 1380 - Abs DTC Rough Road Data Unstable DTC P1381 - Misfire Detected, No EBCM/Pcm Serial Data DTC P1415 - Air System Bank 1 DTC P1416 - Air System Bank 2 DTC P1441 - EVAP System Flow During Non-Purge DTC P1508 - IAC System Low Rpm DTC P1509 - IAC System High Rpm DTC P1539 - A/C Clutch Status Circuit Voltage High DTC P1545 - A/C Clutch Relay Control Circuit DTC P1546 - A/C Clutch Status Circuit Voltage Low DTC P1572 - ASR/TCS Active Circuit Low Voltage Too Long DTC P1626 - Theft Deterrent System Fuel Enable Circuit DTC P1641 - FC Relay 1 Control Circuit DTC P1642 - FC Relay 2 Control Circuit DTC P1643 - Engine Speed Output Circuit DTC P1652 - VSS Output Circuit DTC P1653 - Oil Level Light Control Circuit DTC P1661 - Mil Control Circuit DTC P1663 - Change Oil Light Control Circuit