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Diagnostic Trouble Code Definitions

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. 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 Systems Malfunction N/A
CXXXX (3) Chassis Control System Malfunction N/A
P0087  Fuel Rail Pressure - Low A
P0088  Fuel Rail Pressure - High A
P0089  Fuel Rail Pressure Out Of Range (4) A
P0090  Fuel Rail Pressure Sensor Current Out Of Range A
P0101  Mass Air Flow Sensor Performance (4) B
P0102  MAF Sensor Circuit - Low Voltage B
P0103  MAF Sensor Circuit - High Voltage B
P0106  BARO System Performance (CA) B
P0106  BARO System Performance (Fed) C
P0107  BARO Sensor Circuit - Low Pressure (CA) B
P0107  BARO Sensor Circuit - Low Pressure (Fed) B
P0108  BARO Sensor Circuit - High Pressure (CA) B
P0108  BARO Sensor Circuit - High Pressure (Fed) B
P0112  IAT Sensor Circuit - Low Voltage B
P0113  IAT Sensor Circuit - High Voltage B
P0116  ECT Sensor Performance (5) B
P0117  ECT Sensor Circuit - Low Voltage B
P0118  ECT Sensor Circuit - High Voltage B
P0128  ECT Less Than Thermostat Regulating Temperature (5) B
P0168  Fuel Temperature Sensor High C
P0181  Fuel Temperature Sensor & IAT Sensor Temperature Not Within Specification B
P0182  Fuel Temperature Sensor Circuit - Low Voltage A
P0183  Fuel Temperature Sensor Circuit - High Voltage A
P0192  Fuel Rail Pressure Sensor Circuit - Low Voltage A
P0193  Fuel Rail Pressure Sensor Circuit - High Voltage A
P0201-P0208  Fuel Injector Control Circuits A
P0218 (6) Transmission Fluid Overtemperature C
P0234  TC Engine Overboost Condition (CA) B
P0234  TC Engine Overboost Condition (Fed) B
P0236  TC Boost System (CA) B
P0236  TC Boost System (Fed) C
P0237  TC Boost Sensor Circuit Low Voltage (CA) B
P0237  TC Boost Sensor Circuit Low Voltage (Fed) B
P0238  TC Boost Sensor Circuit High Voltage (CA) B
P0238  TC Boost Sensor Circuit High Voltage (Fed) B
P0300  Engine Misfire Detected (4) B
P0301-P0308  Cylinders No. 1-8 Misfire Detected (4) B
P0335  Crankshaft Position Sensor Circuit A
P0336  Crankshaft Position Sensor Circuit Performance B
P0340  CMP Sensor Circuit Performance A
P0341  Camshaft Position Sensor Circuit Performance B
P0370-P0374  Timing Reference High Resolution A
P0380  Glow Plug Circuit Performance (CA) B
P0380  Glow Plug Circuit Performance (Fed) B
P0401  EGR System - Insufficient Flow (5) B
P0404  EGR Valve Open Pintle Position (5) B
P0405  EGR Pintle Position Circuit - Low Voltage (5) B
P0406  EGR Sensor Circuit High Voltage (5) B
P0461 (7) Fuel Level Sensor Circuit Performance C
P0462 (7) Fuel Level Sensor Circuit - Low Voltage C
P0463 (7) Fuel Level Sensor Circuit - High Voltage C
P0489  EGR Solenoid Circuit - Low Voltage (5) B
P0490  EGR Solenoid Circuit - High Voltage (5) B
P0500  Vehicle Speed Sensor (Allison A/T) B
P0500  Vehicle Speed Sensor (M/T) B
P0540  Intake Air Heater - Incorrect Voltage B
P0543  Intake Air Heater - Incorrect Voltage B
P0561 (6) Unrealistic Variations In Vehicle System Voltage C
P0562 (8) Low System Voltage C
P0563 (8) High System Voltage C
P0567 (9) Cruise Control Resume/Accel Switch Circuit C
P0568 (9) Cruise Control Set/Coast Switch Circuit C
P0571 (9) TCC Brake Switch Circuit C
P0601  ECM Memory A
P0602  ECM Not Programmed A
P0603  Control Module Long Term Memory Reset C
P0604  ECM Random Access Memory Performance A
P0606  ECM Memory A
P0607  ECM Memory A
P0608 (7) Vehicle Speed Circuit Fault C
P0611  Fuel Injection Control Module Internal Fault B
P0612  Fuel Injection Control Module Internal Fault B
P0615 (10) Starter ODM - Incorrect Voltage N/A
P0621 (8) Generator "L" Terminal Circuit C
P0622 (8) Generator Field Circuit C
P0650  MIL Control Circuit A
P0654 (7) Engine Speed Circuit Fault C
P0700  TCM MIL Request A
P0701 (6) Transmission Control System Performance C
P0703  Brake Switch Circuit (Allison A/T) N/A
P0704  Clutch Pedal Switch C
P0708  Transmission Range Switch (Allison A/T) A
P0711 (6) TFT Sensor Circuit - Range/Performance C
P0712 (6) TFT Sensor Circuit - Low Input C
P0713 (6) TFT Sensor Circuit - High Input C
P0716 (6) Turbine Speed Sensor Circuit - Performance A
P0717 (6) Turbine Speed Sensor Circuit - No Signal A
P0721 (6) Output Speed Sensor Circuit - Performance A
P0722 (6) Output Speed Sensor Circuit - No Signal A
P0726 (6) Engine Speed Input Circuit - Performance B
P0727 (6) Engine Speed Input Circuit - No Signal B
P0731 (6) Incorrect 1st Gear Ratio A
P0732 (6) Incorrect 2nd Gear Ratio A
P0733 (6) Incorrect 3rd Gear Ratio A
P0734 (6) Incorrect 4th Gear Ratio A
P0735 (6) Incorrect 5th Gear Ratio A
P0736 (6) Incorrect Reverse Ratio A
P0741 (6) TCC System - Stuck Off B
P0742 (6) TCC System - Stuck On B
P0743 (6) Torque Converter Clutch System Stuck Off B
P0746 (6) Solenoid "A" Controlled Clutch Stuck Off A
P0747 (6) Solenoid "A" Controlled Clutch Stuck On A
P0748 (6) PC Solenoid Circuit - Electrical Malfunction C
P0763 (6) Shift Solenoid "C" Electrical A
P0768 (6) Shift Solenoid "D" Electrical A
P0773 (6) Shift Solenoid "D" Electrical A
P0776 (6) Solenoid "B" Controlled Clutch Stuck Off A
P0777 (6) Solenoid "B" Controlled Clutch Stuck On A
P0778 (6) Pressure Control Solenoid "B" Electrical A
P0836 (6) 4 Wheel Drive Low Switch Circuit Malfunction N/A
P0840 (6) Transmission Pressure Switch Solenoid "C" Circuit A
P0841 (6) Transmission Pressure Switch Solenoid "C" Circuit - Stuck Open A
P0842 (6) Transmission Pressure Switch Solenoid "C" Circuit - Stuck Closed A
P0843 (6) Transmission Pressure Switch Solenoid "C" Circuit - High A
P0845 (6) Transmission Pressure Switch Solenoid "D" Circuit A
P0846 (6) Transmission Pressure Switch Solenoid "D" Circuit - Stuck Open A
P0847 (6) Transmission Pressure Switch Solenoid "D" Circuit - Stuck Closed A
P0848 (6) Transmission Pressure Switch Solenoid "D" Circuit - High A
P0870 (6) Pressure Switch "E" Circuit Malfunction A
P0871 (6) Pressure Switch Solenoid "E" Circuit - Stuck Open A
P0872 (6) Pressure Switch Solenoid "E" Circuit - Stuck Closed A
P0873 (6) Pressure Switch Solenoid "E" Circuit - High A
P0875 (6) Reverse Pressure Switch Circuit Malfunction A
P0876 (6) Reverse Pressure Switch Circuit - Stuck Open B
P0880 (6) TCM Power Input Signal C
P1093  Fuel Rail Pressure Out Of Range (4) A
P1094  Excessive Fuel Injection Pump Flow C
P1125  Accelerator Pedal Position Sensors Out Of Range Or Disagree C
P1172  Fuel Transfer With Secondary Pump C
P1191  Intake Air Duct Air Leak (5) B
P1223  Incorrect Voltage For Commanded State Of Injector Driver No. 1 B
P1226  Incorrect Voltage For Commanded State Of Injector Driver No. 2 B
P1229  Incorrect Voltage For Commanded State Of Injector Driver No. 3 B
P1232  Incorrect Voltage For Commanded State Of Injector Driver No. 4 B
P1235  Incorrect Voltage For Commanded State Of Injector Driver No. 5 B
P1238  Incorrect Voltage For Commanded State Of Injector Driver No. 6 B
P1241  Incorrect Voltage For Commanded State Of Injector Driver No. 7 B
P1244  Incorrect Voltage For Commanded State Of Injector Driver No. 8 B
P1261  ECM Detects A Circuit Fault Related To High Voltage Circuit To Cylinders No. 1, 4, 6 & 7 A
P1262  ECM Detects A Circuit Fault Related To High Voltage Circuit To Cylinders No. 2, 3, 5 & 8 A
P1270  Accelerator Pedal Position Sensor A/D Converter Error C
P1271  APP Sensor 1-2 Performance C
P1272  Accelerator Pedal Position Sensor 2 C
P1273  Accelerator Pedal Position Sensor 1 C
P1277  Accelerator Pedal Position Sensor 1 Circuit Low Voltage C
P1278  Accelerator Pedal Position Sensor 1 Circuit High Voltage C
P1282  Accelerator Pedal Position Sensor 2 Circuit Low Voltage C
P1283  Accelerator Pedal Position Sensor 2 Circuit High Voltage C
P1287  Accelerator Pedal Position Sensor 3 Circuit Low Voltage C
P1288  Accelerator Pedal Position Sensor 3 Circuit Low Voltage C
P1345  CKP/CMP Correlation C
P1404  EGR Valve Closed Pintle Position (5) B
P1431 (7) Secondary Fuel Level Sensor Stuck C
P1432 (7) Secondary Fuel Level Sensor Low C
P1433 (7) Secondary Fuel Level Sensor High C
P1550  Fuel Injection Control Module - Low Voltage C
P1571 (6) TCM Torque Request Circuit B
P1574 (9) Speed Decrease Without Brake Lights C
P1600  ECM Memory Performance A
P1621  ECM Memory Performance C
P1626 (11) Theft Deterrent System Loss Of Serial Communication C
P1627  ECM Memory Performance A
P1630 (11) ECM Unable To Learn Passlock™ Module Password C
P1631 (11) Theft Deterrent System Password Incorrect C
P1632 (11) Fuel Disable Or Undecided Password Sent From BCM C
P1635  5-Volt Reference 1 Circuit A
P1637 (8) Generator Turn-On Signal Circuit Voltage Out Of Range C
P1638 (8) Pulse Width Modulated Signal Out Of Range C
P1639  5-Volt Reference 2 Circuit B
P1643  Wait To Start Indicator Control Circuit B
P1644 (12) Torque Signal Voltage C
P1658  Fuel Injection Control Module Driver Circuits A
P1680  PCM Memory A
P1681  PCM Memory A
P1683  PCM Memory B
P1688 (6) Unmanaged Engine Torque Delivered to TCM B
P1709 (6) Transmission Pressure Switch Solenoid "E" Circuit A
P1710 (6) Transmission Pressure Switch Solenoid "E" Circuit - Stuck Open A
P1711 (6) Transmission Pressure Switch Solenoid "E" Circuit - Stuck Closed A
P1712 (6) Transmission Pressure Switch Solenoid "E" Circuit - High A
P1713 (6) Transmission Pressure Switch Reverse Circuit A
P1714 (6) Transmission Pressure Switch Reverse Circuit - Stuck Open B
P1720 (6) Solenoid "A" Controlled Clutch Not Engaged A
P1721 (6) Solenoid "B" Controlled Clutch Not Engaged A
P1723 (6) Solenoid "A" Controlled Clutch Engaged A
P1724 (6) Solenoid "B" Controlled Clutch Engaged A
P1760 (6) TCM Supply Voltage C
P1779 (6) Engine Torque Delivered To PCM B
P1781  TCM MIL Request Circuit B
P1860 (6) TCC PWM Solenoid Circuit - Electrical Malfunction B
P1875 (6) 4WD Low Switch Circuit - Electrical Malfunction
 		 B
P2141  EGR Throttle Valve Vacuum Control Solenoid Circuit - Low Voltage (5) B
P2142  EGR Throttle Valve Vacuum Control Solenoid Circuit - High Voltage (5) B
P2144  EGR Throttle Valve Vacuum Control Solenoid Circuit - High Voltage (5) B
P2145  EGR Vacuum Vent Solenoid Control Circuit - High Voltage (5) B
U1800  CAN Message From The FICM Is Not Received By The ECM
UXXXX (3) Network Communication System Malfunction N/A
(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) Code type is "C" on federal vehicles.
(5) Code does not apply to federal vehicles.
(6) See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.
(7) See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.
(8) See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
(9) See appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.
(10) See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.
(11) See appropriate ANTI-THEFT SYSTEMS article in ACCESSORIES & EQUIPMENT.
(12) See appropriate ANTI-LOCK article in BRAKES.
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