LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2001 >> Cutaway 8.1 G >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 8.1L >> Diagnostic Trouble Code Definitions
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code Definitions

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). See Figure.
DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC Definition Code Type (1)
Bxxxx (2) Body Control System Malfunction -
Cxxxx (2) Chassis System Malfunction -
P0101  Mass Airflow System Performance B
P0102  Mass Airflow Sensor Circuit - Low Frequency B
P0103  Mass Airflow Sensor Circuit - High Frequency B
P0106  Manifold Absolute Pressure System Performance B
P0107  Manifold Absolute Pressure Sensor Circuit - Low Voltage B
P0108  Manifold Absolute Pressure Sensor Circuit - High Voltage B
P0112  Intake Air Temperature Sensor Circuit - Low Voltage B
P0113  Intake Air Temperature Sensor Circuit - High Voltage B
P0117  Engine Coolant Temperature Sensor Circuit - Low Voltage B
P0118  Engine Coolant Temperature Sensor Circuit - High Voltage B
P0125  Engine Coolant Temperature Excessive Time To Enter Closed Loop Fuel Control B
P0128  Engine Coolant Temperature Fails To Reach A Preset Target Temperature B
P0131 Or P0151  Heated Oxygen Sensor Circuit - Low Voltage B
P0132 Or P0152  Heated Oxygen Sensor Circuit - High Voltage B
P0133 Or P0153  Heated Oxygen Sensor Circuit - Slow Response B
P0134 Or P0154  Heated Oxygen Sensor Circuit - Insufficient Activity B
P0135 Or P0155  Excessive Time To Enter Closed Loop B
P0137 Or P0157  Heated Oxygen Sensor Circuit - Low Voltage B
P0138 Or P0158  Heated Oxygen Sensor Circuit - High Voltage B
P0140 Or P0160  Heated Oxygen Sensor Circuit - Insufficient Activity B
P0141  Heated Oxygen Sensor Circuit - Insufficient Activity B
P0161  Heated Oxygen Sensor Heater Circuit B
P0161 Heated Oxygen Sensor Heater Circuit B
P0171 Or P0174  Fuel Trim System Lean B
P0172 Or P0175  Fuel Trim System Rich B
P0200 (3) Injector Control Circuit B
P0218 (4) Automatic Transmission Related DTC C
P0230  Fuel Pump Control Circuit B
P0300  Engine Misfire Detected B
P0325  Knock Sensor Module Performance B
P0327 Or P0332  Knock Sensor Circuit B
P0335  Crankshaft Position Sensor Circuit B
P0336  Crankshaft Position Sensor Performance B
P0341  Camshaft Position Sensor Performance B
P0342  Camshaft Position Sensor Circuit - Low Voltage B
P0343  Camshaft Position Sensor Circuit - High Voltage B
P0351-P0358  Ignition Coil Control Circuit B
P0401  EGR System - Insufficient Flow A
P0404  EGR Valve Operation Out Of Range B
P0405  EGR Position Sensor Circuit - Low Voltage B
P0410  Secondary Air Injection System A
P0418  Secondary Air Injection Pump Relay Control Circuit B
P0420 Or P0430  Catalyst System - Low Efficiency A
P0440  Evaporative Emission System - Large Leak Detected A
P0442  Evaporative Emission System - Small Leak Detected A
P0443  Evaporative Emission Purge Valve Control Circuit B
P0446  Evaporative Emission Vent System Performance A
P0449  Evaporative Canister Vent Valve Control Circuit B
P0452  Fuel Tank Pressure Sensor Circuit - Low Voltage B
P0453  Fuel Tank Pressure Sensor Circuit - High Voltage B
P0461 (5) Instrument Panel Related DTC C
P0462 (5) Instrument Panel Related DTC C
P0463 (5) Instrument Panel Related DTC C
P0500 (6) Manual Transmission Related DTC B
P0502 (4) Automatic Transmission Related DTC B
P0503 (4) Automatic Transmission Related DTC B
P0506  Idle Speed Low B
P0507  Idle Speed High B
P0562 (7) Low System Voltage C
P0563 (7) High System Voltage C
P0567 (8) Cruise Control Related DTC -
P0568 (8) Cruise Control Related DTC -
P0571 (8) Cruise Control Related DTC -
P0601-P0607, P1600, P1621, P1627, P1680, P1681 Or P1683  Control Module Fault A
P0606 (4) Automatic Transmission Related DTC A
P0608 (5) Instrument Panel Related DTC C
P0621 (7) Generator Turn-On Signal Circuit Malfunction -
P0650  Malfunction Indicator Light Control Circuit B
P0654 (5) Instrument Panel Related DTC C
P0700  Malfunction Indicator Light Control Circuit A
P0701 (4) Automatic Transmission Related DTC C
P0703 (4) Automatic Transmission Related DTC C
P0704 (8) Cruise Control Related DTC B
P0706 (4) Transmission Range Switch Performance A Or C
P0708 (4) Automatic Transmission Related DTC A
P0711 (4) Automatic Transmission Related DTC B Or C
P0712 (4) Automatic Transmission Related DTC B Or C
P0713 (4) Automatic Transmission Related DTC B Or C
P0716 (4) Automatic Transmission Related DTC A, B Or C
P0717 (4) Automatic Transmission Related DTC A, B Or C
P0719 (4) Automatic Transmission Related DTC C
P0721 (4) Automatic Transmission Related DTC A
P0722 (4) Automatic Transmission Related DTC A
P0724 (4) Automatic Transmission Related DTC C
P0726 (4) Automatic Transmission Related DTC B
P0727 (4) Automatic Transmission Related DTC B
P0730 (4) Automatic Transmission Related DTC C
P0731 (4) Automatic Transmission Related DTC A
P0732 (4) Automatic Transmission Related DTC A
P0733 (4) Automatic Transmission Related DTC A
P0734 (4) Automatic Transmission Related DTC A
P0735 (4) Automatic Transmission Related DTC A
P0736 (4) Automatic Transmission Related DTC A
P0740 (4) Automatic Transmission Related DTC B
P0741 (4) Automatic Transmission Related DTC B Or C
P0742 (4) Automatic Transmission Related DTC B Or C
P0748 (4) Automatic Transmission Related DTC A Or C
P0751 (4) Automatic Transmission Related DTC B Or C
P0752 (4) Automatic Transmission Related DTC B Or C
P0753 (4) Automatic Transmission Related DTC B Or C
P0756 (4) Automatic Transmission Related DTC A Or C
P0757 (4) Automatic Transmission Related DTC A Or C
P0758 (4) Automatic Transmission Related DTC A Or C
P0763 (4) Automatic Transmission Related DTC A
P0768 (4) Automatic Transmission Related DTC A
P0773 (4) Automatic Transmission Related DTC A
P0778 (4) Automatic Transmission Related DTC A
P0785 (4) Automatic Transmission Related DTC B
P0840 (4) Automatic Transmission Related DTC A
P0841 (4) Automatic Transmission Related DTC A
P0842 (4) Automatic Transmission Related DTC A
P0843 (4) Automatic Transmission Related DTC A
P0845 (4) Automatic Transmission Related DTC A
P0846 (4) Automatic Transmission Related DTC A
P0847 (4) Automatic Transmission Related DTC A
P0848 (4) Automatic Transmission Related DTC A
P1111  Intake Air Temperature Sensor Circuit Intermittent High Voltage C
P1112  Intake Air Temperature Sensor Circuit Intermittent Low Voltage C
P1114  Engine Coolant Temperature Sensor Circuit Intermittent Low Voltage C
P1115  Engine Coolant Temperature Sensor Circuit Intermittent High Voltage C
P1120  Throttle Position Sensor Circuit No. 1 A
P1125  Accelerator Pedal Position Circuit A
P1133 Or P1153  Heated Oxygen Sensor Insufficient Switching B
P1134 Or P1154  Heated Oxygen Sensor Transition Time Ratio Not Within Range B
P1172  Secondary Fuel Pump Insufficient/No Fuel Flow C
P1220  Throttle Position Sensor No. 2 Circuit A
P1221  Throttle Position Sensors No. 1 & 2 Correlation A
P1258  Engine Coolant Over Temperature - Protection Mode Active A
P1275  Accelerator Pedal Position Sensor No. 1 Circuit C
P1276  Accelerator Pedal Position Sensor No. 1 Performance C
P1280  Accelerator Pedal Position Sensor No. 2 Circuit C
P1281  Accelerator Pedal Position Sensor No. 2 Performance C
P1285  Accelerator Pedal Position Sensor No. 3 Circuit C
P1286  Accelerator Pedal Position Sensor No. 3 Performance C
P1336  Crankshaft Position System Variation Not Learned A
P1380  Misfire Detected - Rough Road Data Not Available C
P1381  Misfire Detected - No Communications With Brake Control Module C
P1404  EGR Closed Position Performance B
P1415 Or P1416  Secondary Air Injection System A
P1431 (5) Instrument Panel Related DTC C
P1432 (5) Instrument Panel Related DTC C
P1433 (5) Instrument Panel Related DTC C
P1441  Evaporative Emission System Flow During Non-Purge B
P1514  Throttle Body Performance A
P1515  Commanded & Actual Throttle Positions Out Of Range A
P1516  Predicted & Actual Throttle Positions Out Of Range A
P1517  Throttle Actuator Control Module Performance A
P1518  Throttle Actuator Control Module Serial Data Circuit A
P1571 (2) Antilock Brake System Related DTC B
P1574 (8) Cruise Control Related DTC C
P1626 (9) Anti-Theft System Related DTC C
P1631 (9) Anti-Theft System Related DTC C
P1635  5-Volt Reference No. 1 Circuit B
P1637 (7) Generator Turn-On Signal Circuit C
P1638 (7) Generator Field Duty Cycle Circuit C
P1639  5-Volt Reference No. 2 Circuit B
P1688 (4) Automatic Transmission Related DTC -
P1709 (4) Automatic Transmission Related DTC A
P1710 (4) Automatic Transmission Related DTC A
P1711 (4) Automatic Transmission Related DTC A
P1712 (4) Automatic Transmission Related DTC A
P1713 (4) Automatic Transmission Related DTC A
P1714 (4) Automatic Transmission Related DTC B
P1718 (4) Automatic Transmission Related DTC -
P1720 (4) Automatic Transmission Related DTC A
P1721 (4) Automatic Transmission Related DTC A
P1723 (4) Automatic Transmission Related DTC A
P1724 (4) Automatic Transmission Related DTC A
P1726 (4) Automatic Transmission Related DTC -
P1727 (4) Automatic Transmission Related DTC -
P1760 (4) Automatic Transmission Related DTC C
P1779 (4) Automatic Transmission Related DTC B
P1781  Incorrect Voltage Level On Transmission Control Module Malfunction Indicator Light Request Circuit B
P1810 (4) Automatic Transmission Related DTC B Or C
P1860 (4) Automatic Transmission Related DTC B Or C
P1870 (4) Automatic Transmission Related DTC B Or C
P1875 (4) Automatic Transmission Related DTC B Or C
Uxxxx (2) Communication Malfunction -
(1) For description of the different code types, see ON-BOARD DIAGNOSTICS  under SELF-DIAGNOSTIC SYSTEM.
(2) Diagnose DTCs as necessary. See DIAGNOSTIC TROUBLE CODE DEFINITIONS in appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
(3) On Chevy Express and Savana, see DTC P0200: INJECTOR CONTROL CIRCUIT ("G" SERIES) . On all other models, see DTC P0200: INJECTOR CONTROL CIRCUIT ("C" & "K" SERIES) .
(4) See appropriate ELECTRONIC CONTROLS article in AUTOMATIC TRANSMISSIONS.
(5) See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.
(6) See appropriate DIAGNOSIS article in MANUAL TRANSMISSIONS.
(7) See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
(8) See appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.
(9) See appropriate ANTI-THEFT SYSTEMS article in ACCESSORIES & EQUIPMENT.
scientia non olet · About LEMON Manuals