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Diagnostic Trouble Code Definitions

WARNING: This page is about a different car, the 2001 GMC Sonoma and 2001 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: DTCs are retrieved using a Tech 2 scan tool, or other OBD-II compatible scan tool connected to OBD-II 16-pin Data Link Connector (DLC).
DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC Definition (1) Type
P0105  MAF System Performance/Range 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
P0117  ECT Sensor Circuit - Low Voltage B
P0118  ECT Sensor Circuit - High Voltage B
P0122  TP Sensor Circuit - Low Voltage B
P0123  TP Sensor Circuit - High Voltage B
P0125  ECT Excess Time To Enter Closed Loop Fuel Control B
P0128  Engine Coolant Fails To Reach Preset Target Temperature B
P0130  Engine Not In Closed Loop For 5 Seconds Out Of 12.5 Seconds B
P0131  O2S Circuit Low Voltage - Sensor 1 B
P0132  O2S Circuit High Voltage - Sensor 1 B
P0133  O2S Circuit Slow Response - Sensor 1 B
P0134  O2S Circuit Insufficient Activity - Sensor 1 B
P0137  HO2S Circuit Low Voltage - Sensor 2 B
P0138  HO2S Circuit Voltage High - Sensor 2 B
P0140  HO2S Circuit Insufficient Activity - Sensor 2
 		 B
P0141  HO2S Heater Performance - Sensor 2 B
P0169  Alcohol Content In Fuel Too High For A Given Ambient Temperature C
P0171  Fuel Trim System - Lean B
P0172  Fuel Trim System Rich B
P0178  Fuel Composition Sensor Frequency Less Than 45 Hertz B
P0179  Fuel Composition Sensor Frequency Greater Than 155 Hertz B
P0201-P0204  Injector Control Circuit B
P0218 (2) Transmission Fluid Temperature - High C
P0300  Engine Misfire Detected (3)
P0301-P0304  Cylinder Misfire Detected (3)
P0325  Knock Sensor Circuit B
P0336  CKP Sensor Circuit B
P0340  Camshaft Position Sensor Circuit - No Activity B
P0341  Camshaft Position Sensor Circuit - Intermittent Signal B
P0410  Secondary Air Injection B
P0420  TWC System - Low Efficiency A
P0440  EVAP System A
P0442  EVAP Control System - Small Leak Detected A
P0446  EVAP Vent System Performance A
P0452  Fuel Tank Pressure Sensor Circuit - Low Voltage A
P0453  Fuel Tank Pressure Sensor Circuit - High Voltage A
P0461 (4) PCM Does Not Detect Change In Fuel Level For 200 Miles C
P0462 (4) Fuel Level Signal Less Than One Percent C
P0463 (4) Fuel Level Signal Greater Than 99 Percent C
P0502 (2) VSS Circuit B
P0503 (2) VSS Circuit B
P0506  Idle Speed - Low B
P0507  Idle Speed - High B
P0530 (5) A/C Refrigerant Pressure Circuit C
P0562  System Voltage - Low C
P0563  System Voltage - High C
P0601-P0607, P1600, P1621, P1627 Or P1683  PCM Memory A
P0621 (6) Generator Circuit C
P0622 (6) Generator PWM Signal Out-Of-Range C
P0705  Transmission Range Switch Circuit C
P0711 (2) Transmission Fluid Temperature Sensor Circuit C
P0712 (2) Transmission Fluid Temperature Sensor Circuit C
P0713 (2) Transmission Fluid Temperature Sensor Circuit C
P0719  Brake Switch Circuit Closed C
P0724  Brake Switch Circuit Open C
P0740 (2) TCC Solenoid Circuit B
P0742 (2) TCC Solenoid Circuit B
P0748 (2) A/T Pressure Control Solenoid Duty Cycle C
P0751 (2) A/T 1-2 Shift Solenoid Circuit A
P0753 (2) A/T 1-2 Shift Solenoid Circuit B
P0756 (2) A/T 2-3 Shift Solenoid Circuit A
P0758 (2) A/T 2-3 Shift Solenoid Circuit A
P0785 (2) A/T 2-3 Shift Solenoid Circuit A
P1133  O2S1 - Insufficient Switching B
P1137  O2S1 Voltage Greater Than HO2S No. 2 Voltage B
P1138  HO2S No. 2 Voltage Greater Than 648 Millivolts For More Than 10 Seconds B
P1171  Fuel System Lean During Acceleration C
P1336  CKP System Variation Not Learned A
P1441  EVAP System Flow During Non-Purge A
P1626 (7) PCM-To-BCM Communications C
P1631 (7) VTD PassLock™ System C
P1632 (7) VTD PassLock™ System C
P1637 (6) Generator L-Terminal Circuit C
P1638 (6) Generator PWM Signal Out-Of-Range C
P1810 (2) A/T Fluid Pressure Manual Valve Position Switch State B
P1860 (2) TCC PWM Solenoid Valve Control Circuit B
P1870 (2) PCM Detects Excessive TCC Slip B
(1) See CODE TYPES  under ON-BOARD DIAGNOSTICS in SELF-DIAGNOSTIC SYSTEM.
(2) See appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS.
(3) DTC Type "A" for catalyst failure or Type "B" for emission failure.
(4) See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.
(5) See appropriate A/C-HEATER SYSTEM article in lemon-25® AIR CONDITIONING & HEATING SERVICE & REPAIR manual.
(6) See appropriate GENERATORS & REGULATORS article in ACCESSORIES & EQUIPMENT.
(7) See appropriate ANTI-THEFT SYSTEMS article in ACCESSORIES & EQUIPMENT.
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