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Diagnostic Trouble Code Definitions

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC TROUBLE CODE INDEX

DTC (1) Description (2) Code Type
BXXXX (3) Body Control System Malfunction (4)
CXXXX (4) Chassis Control System Malfunction (4)
P0101  Mass Air Flow Sensor Performance B
P0102  Mass Air Flow Sensor Circuit - Low Frequency B
P0103  Mass Air Flow Sensor Circuit - High Frequency B
P0106  MAP System Performance B
P0107  MAP Sensor Circuit - Low Voltage B
P0108  MAP Sensor Circuit - High Voltage B
P0112  IAT Sensor Circuit - Low Voltage B
P0113  IAT Sensor Circuit - High Voltage B
P0116  ECT Sensor Performance B
P0117  ECT Sensor Circuit - Low Voltage B
P0118  ECT Sensor Circuit - High Voltage B
P0120  TP Sensor Circuit A
P0125  Excessive Time To Enter Closed Loop Fuel Control B
P0128  ECT Less Than Thermostat Regulating Temperature B
P0131  HO2S Circuit - Low Voltage - Bank 1, Sensor 1 B
P0132  HO2S Circuit - High Voltage - Bank 1, Sensor 1 B
P0133  HO2S Circuit - Slow Response - Bank 1, Sensor 1 B
P0134  HO2S Circuit - Insufficient Activity - Bank 1, Sensor 1 B
P0135  HO2S Heater Circuit - Bank 1, Sensor 1 B
P0137  HO2S Circuit - Low Voltage - Bank 1, Sensor 2 B
P0138  HO2S Circuit - High Voltage - Bank 1, Sensor 2 B
P0140  HO2S Circuit - Insufficient Activity - Bank 1, Sensor 2 B
P0141  HO2S Heater Circuit - Bank 1, Sensor 2 B
P0151  HO2S Circuit - Low Voltage - Bank 2, Sensor 1 B
P0152  HO2S Circuit - High Voltage - Bank 2, Sensor 1 B
P0153  HO2S Circuit - Slow Response - Bank 2, Sensor 1 B
P0154  HO2S Circuit - Insufficient Activity - Bank 2, Sensor 1 B
P0155  HO2S Heater Circuit - Bank 2, Sensor 1 B
P0157  HO2S Circuit - Low Voltage - Bank 2, Sensor 2 B
P0158  HO2S Circuit - High Voltage - Bank 2, Sensor 2 B
P0160  HO2S Circuit - Insufficient Activity - Bank 2, Sensor 2 B
P0161  HO2S Heater Circuit - Bank 2, Sensor 2 B
P0171  Fuel Trim System Lean - Bank 1 B
P0172  Fuel Trim System Rich - Bank 1 B
P0174  Fuel Trim System Lean - Bank 2 B
P0175  Fuel Trim System Rich - Bank 2 B
P0200  Fuel Injector Control Circuit B
P0218 (5) Transmission Fluid Overtemperature C
P0220  Throttle Position Sensor 2 Circuit A
P0230  Fuel Pump Control Relay Circuit B
P0300  Engine Misfire Detected B
P0315  Crankshaft Position Sensor Variation Not Learned A
P0325  Knock Sensor Module Circuit B
P0327  Knock Sensor Circuit - Low Voltage - Sensor 1 B
P0332  Knock Sensor Circuit - Low Voltage - Sensor 2 B
P0335  Crankshaft Position Sensor Circuit B
P0336  Crankshaft Position Sensor Circuit Performance B
P0341  Camshaft Position Sensor Circuit Performance B
P0342  Camshaft Position Sensor - Signal Low B
P0343  Camshaft Position Sensor - Signal High B
P0351-P0358  Ignition Control Circuit B
P0420  TWC System - Low Efficiency - Bank 1 A
P0430  TWC System - Low Efficiency - Bank 2 A
P0442  EVAP System - Small Leak A
P0443  EVAP Purge Solenoid Control Circuit B
P0446  EVAP Vent Control Circuit A
P0449  EVAP Vent Solenoid Valve Control Circuit B
P0452  Fuel Tank Pressure Sensor - Low Voltage B
P0453  Fuel Tank Pressure Sensor - High Voltage B
P0455  EVAP System Leak Detected - Gross Leak/No Flow A
P0461 (6) Fuel Level Sensor Circuit Performance C
P0462 (6) Fuel Level Sensor Circuit - Low Voltage C
P0463 (6) Fuel Level Sensor Circuit - High Voltage C
P0480 (7) Cooling Fan Clutch Control Circuit B
P0481 (7) High Speed Cooling Fan Relay Control Circuit B
P0483 (7) Commanded Cooling Fan Speed/Actual Cooling Fan Speed Correlation Error B
P0493 (7) Cooling Fan Clutch Over Speed Condition A
P0495 (7) Cooling Fan Clutch RPM Error B
P0496  EVAP System High Purge Flow B
P0502 (5) Vehicle Speed Sensor Low Output B
P0503 (5) Vehicle Speed Sensor Erratic B
P0506  Idle Control System - Low RPM B
P0507  Idle Control System - High RPM B
P0522 (6) Engine Oil Pressure Sensor Circuit Low Voltage C
P0523 (6) Engine Oil Pressure Sensor Circuit High Voltage C
P0526 (7) Loss Of Cooling Fan Speed Signal B
P0530 (8) A/C Refrigerant Pressure Sensor Circuit C
P0562 (9) Low System Voltage C
P0563 (9) High System Voltage C
P0567 (10) Cruise Control Resume/Accel Switch Signal Circuit C
P0568 (10) Cruise Control Set/Coast Switch Signal Circuit C
P0601  Internal Control Module Memory Check Sum Error A
P0602  PCM Programming Error A
P0604  Internal Control Module Random Access Memory Error A
P0606  ECM/PCM Processor A
P0607  Control Module Performance A
P0608 (3) Vehicle Speed Output Circuit Out Of Range C
P0609 (3) Vehicle Speed Signal Circuit - Low Voltage C
P0641  5-Volt Reference Circuit Out Of Range B
P0650  MIL Control Circuit (11) B
P0651  Sensor Reference Voltage Circuit B
P0654 (6) Engine Speed Circuit Fault C
P0706 (5) Transmission Range Switch C
P0711 (5) TFT Sensor Circuit - Range/Performance C
P0712 (5) TFT Sensor Circuit - Low Input C
P0713 (5) TFT Sensor Circuit - High Input C
P0719 (5) Brake Switch Circuit Malfunction C
P0724 (5) Brake Switch Circuit Malfunction C
P0740 (5) TCC Solenoid Valve Circuit - Electrical Malfunction B
P0741 (5) TCC System B
P0742 (5) TCC System B
P0748 (5) Pressure Control Solenoid Valve Circuit - Electrical Malfunction C
P0751 (5) 1-2 Shift Solenoid Valve Performance B
P0752 (5) 1-2 Shift Solenoid Valve Performance B
P0753 (5) 1-2 Shift Solenoid Circuit - Electrical Malfunction B
P0756 (5) 2-3 Shift Solenoid Valve Performance A
P0757 (5) 2-3 Shift Solenoid Valve Performance A
P0758 (5) 2-3 Shift Solenoid Circuit - Electrical Malfunction A
P0785 (5) 3-2 Shift Solenoid Circuit - Electrical Malfunction B
P0894 (5) Excessive TCC Slip B
P1106  MAP Sensor Circuit Intermittent High Voltage C
P1107  MAP Sensor Circuit Intermittent Low Voltage C
P1111  IAT Sensor Circuit - Intermittent High Voltage C
P1112  IAT Sensor Circuit - Intermittent Low Voltage C
P1114  ECT Sensor Circuit - Intermittent Low Voltage C
P1115  ECT Sensor Circuit - Intermittent High Voltage C
P1125  Accelerator Pedal Position Sensors Out Of Range Or Disagree A
P1133  HO2S Circuit - Insufficient Switching - Bank 1, Sensor 1 B
P1153  HO2S Circuit - Insufficient Switching - Bank 2, Sensor 1 B
P1258 (7) Engine Over-Temperature A
P1380  EBCM DTC Detected Rough Road Data Unstable C
P1381  Misfire Detected - No EBCM/PCM Serial Data C
P1514  Calculated Vs Actual Airflow Correlation High A
P1515  Predicted Vs Actual Throttle Position Correlation Error A
P1516  Predicted Vs Actual Throttle Position Correlation Error A
P1518  TAC Module Serial Data Fault A
P1571 (3) Invalid Requested Torque Signal C
P1574 (3) Speed Decrease Without Brake Lights C
P1600  PCM Memory Performance A
P1621  PCM Memory Performance A
P1626 (12) Theft Deterrent System Loss Of Serial Communication C
P1627  PCM Memory Performance A
P1630 (12) PCM Unable To Learn Passlock Module Password C
P1631 (12) Theft Deterrent System Password Incorrect C
P1637 (9) Generator Turn-On Signal Circuit Voltage Out Of Range C
P1638 (9) Pulse Width Modulated Signal Out Of Range C
P1644 (13) Delivered Torque Output Circuit C
P1680  PCM Memory A
P1681  PCM Memory A
P1683  PCM Memory B
P1689 (13) Traction Control Delivered Torque Control Circuit C
P1810 (5) TFP Manual Valve Position Switch - Circuit Malfunction B
P1860 (5) TCC PWM Solenoid Circuit B
P1875 (5) 4WD Low Switch Circuit - Electrical Malfunction
 		 B
P2108  TAC Module Processor Fault
 		 A
P2120  APP Sensor 1 Circuit Malfunction C
P2121  APP Sensor Circuits Out Of Correlation C
P2125  APP Sensor 2 Circuit Malfunction C
P2135  TP Sensor Signals 1 & 2 Disagree or Outside Predetermined Range A
P2610  PCM Memory (4)
UXXXX (3) Network Communication System Malfunction (4)
(1) DTC definitions may vary depending on vehicle and/or engine configuration.
(2) See CODE TYPES  under ON-BOARD DIAGNOSTICS.
(3) See appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
(4) Information is not available from manufacturer.
(5) See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.
(6) See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.
(7) See appropriate ELECTRIC COOLING FANS article in ENGINES.
(8) See appropriate A/C-HEATER SYSTEMS article in AIR CONDITIONING & HEATING.
(9) See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
(10) See appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.
(11) DTC P0650 is a type "B" code, but will not illuminate the MIL.
(12) See appropriate ANTI-THEFT SYSTEMS article in ACCESSORIES & EQUIPMENT.
(13) See appropriate ANTI-LOCK article in BRAKES.
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