LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2000 >> Impala LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Engine Controls - Self-Diagnostics) >> Diagnostic Trouble Code Definitions
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Trouble Code Definitions

WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. 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) Code Type
BXXXX (2) Body Control System Malfunction N/A
CXXXX (2) Chassis Control System Malfunction N/A
P0030  HO2S Heater Control Circuit (Sensor 1) B
P0036  HO2S Heater Control Circuit (Sensor 2) B
P0101  Mass Airflow Sensor System Performance B
P0102  Mass Airflow Sensor Circuit Low Frequency B
P0103  Mass Airflow 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  Intake Air Temperature Sensor Circuit Low Voltage B
P0113  Intake Air Temperature Sensor Circuit High Voltage B
P0116  Engine Coolant Temperature Sensor Circuit Performance B
P0117  Engine Coolant Temperature Sensor Circuit Low Voltage B
P0118  Engine Coolant Temperature Sensor Circuit High Voltage B
P0121  Throttle Position Sensor Circuit Insufficient Activity B
P0122  Throttle Position Sensor Circuit Voltage Low B
P0123  Throttle Position Sensor Circuit High Voltage B
P0125  Engine Coolant Temperature Excessive Time To Reach Closed Loop B
P0128  Engine Coolant Thermostat B
P0130  HO2S Bank 1 Sensor 1 Circuit B
P0131  HO2S Bank 1 Sensor 1 Circuit - Low Voltage B
P0132  HO2S Bank 1 Sensor 1 Circuit - High Voltage B
P0133  HO2S Bank 1 Sensor 1 - Slow Response B
P0134  HO2S Bank 1 Sensor 1 - Insufficient Activity B
P0135  HO2S Bank 1 Sensor 1 - Heater Performance B
P0137  HO2S Bank 1 Sensor 2 Circuit - Low Voltage B
P0138  HO2S Bank 1 Sensor 2 Circuit - High Voltage B
P0140  HO2S Bank 1 Sensor 2 Circuit - Insufficient Activity B
P0141  HO2S Bank 1 Sensor 2 - Heater Performance B
P0150  HO2S Bank 2 Sensor 1 Circuit B
P0151  HO2S Bank 2 Sensor 1 Circuit - Low Voltage B
P0152  HO2S Bank 2 Sensor 1 Circuit - High Voltage B
P0153  HO2S Bank 2 Sensor 1 - Slow Response B
P0154  HO2S Bank 2 Sensor 1 - Insufficient Activity B
P0155  HO2S Bank 2 Sensor 1 Circuit - Heater Performance 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
P0201-P0208  Injector Control Circuit B
P0218 (3) Transaxle Overtemperature C
P0230  Fuel Pump Control Circuit C
P0300  Engine Misfire Detected B
P0325  Knock Sensor System B
P0326  Excessive Spark Retard B
P0327  Knock Sensor Circuit Out Of Range B
P0335  Crankshaft Position Sensor "A" Loss Of Signal B
P0336  Crankshaft Position Sensor "A" Circuit Performance B
P0340  Camshaft Position Sensor Circuit B
P0341  Camshaft Position Sensor Circuit Performance B
P0351-P0358  Ignition Coil Primary Circuits B
P0385  Crankshaft Position Sensor "B" Loss Of Signal B
P0386  Crankshaft Position Sensor "B" Circuit Performance B
P0401  EGR Flow Insufficient A
P0403  EGR Solenoid Control Circuit B
P0404  EGR Open Position Performance B
P0405  EGR Position Sensor Circuit Low Voltage B
P0410  Secondary Air Injection System B
P0412  Secondary Air Injection Solenoid Relay Control Circuit B
P0418  Secondary Air Injection Pump Relay Control Circuit B
P0420  Catalyst System Low Efficiency A
P0440  EVAP System C
P0442  EVAP System - Small Leak Detected A
P0443  EVAP Purge Solenoid Control Circuit B
P0446  EVAP Canister Vent Restricted Or Blocked C
P0449  EVAP Canister Vent Solenoid Control Circuit B
P0452  Fuel Tank Pressure Sensor Circuit - Low Voltage B
P0453  Fuel Tank Pressure Sensor Circuit - High Voltage B
P0461 (4) Fuel Level Sensor Circuit Performance C
P0462 (4) Fuel Level Sensor Circuit - Low Voltage C
P0463 (4) Fuel Level Sensor Circuit - High Voltage C
P0480 (5) Coolant Fan 1 Control Circuit B
P0481 (5) Coolant Fan 2 Control Circuit B
P0506  Idle Speed Low B
P0507  Idle Speed High B
P0512 (2) Improper Crank Request Input Detected C
P0522 (4) Engine Oil Pressure Sensor Circuit - Low Voltage C
P0523 (4) Engine Oil Pressure Sensor Circuit - High Voltage C
P0530 (6) A/C Pressure Sensor Circuit - Low Voltage C
P0532 (6) A/C System Low Pressure Detected C
P0533 (6) A/C System High Pressure Detected C
P0560 (7) System Voltage C
P0562 (7) System Voltage Low C
P0563 (7) System Voltage High C
P0574 (8) Cruise Control System - Vehicle Speed Too High C
P0601  Control Module Read Only Memory A
P0602  Control Module Not Programmed A
P0603  Control Module Long Term Memory Reset C
P0604  Control Module Random Access Memory A
P0605  Control Module Random Access Memory A
P0606  Control Module Random Access Memory A
P0607  Control Module Random Access Memory A
P0615 (9) Starter Relay Control Circuit C
P0620 (7) Incorrect Voltage Signal C
P0621 (7) Generator "L" Control Circuit C
P0622 (7) Generator "F" Control Circuit C
P0650  Malfunction Indicator Light Control Circuit B
P0711 (3) Transmission Fluid Temperature Sensor Circuit Performance C
P0712 (3) Transmission Fluid Temperature Sensor Circuit - Low Input C
P0713 (3) Transmission Fluid Temperature Sensor Circuit - High Input C
P0716 (3) Input Speed Sensor Circuit Intermittent B
P0717 (3) Input Speed Sensor Circuit - Low Input B
P0719 (3) Brake Switch Circuit - Low Input C
P0724 (3) Brake Switch Circuit - High Input C
P0731 (3) Incorrect 1st Gear Ratio C
P0732 (3) Incorrect 2nd Gear Ratio C
P0733 (3) Incorrect 3rd Gear Ratio C
P0734 (3) Incorrect 4th Gear Ratio C
P0741 (3) Torque Converter Clutch Circuit Inoperative - Stuck Off B
P0742 (3) Torque Converter Clutch Circuit Inoperative - Stuck On B
P0748 (3) Pressure Control Solenoid Electrical Malfunction C
P0751 (3) 1-2 Shift Solenoid Valve Performance B
P0752 (3) 1-2 Shift Solenoid Valve Performance B
P0756 (3) 2-3 Shift Solenoid Performance A
P0757 (3) 2-3 Shift Solenoid Performance A
P1031  HO2S Bank 1 Sensor 1 Heater Current Monitor Control Circuit B
P1032  HO2S Bank 2 Sensor 1 Heater Current Monitor Control Circuit B
P1106  MAP Sensor Circuit Intermittent High Voltage C
P1107  MAP Sensor Circuit Intermittent Low Voltage C
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
P1121  Throttle Position Sensor Circuit Intermittent High Voltage C
P1122  Throttle Position Sensor Circuit Intermittent Low Voltage C
P1133  HO2S Bank 1 Sensor 1 - Insufficient Switching B
P1134  HO2S Bank 1 Sensor 1 - Transition Time Ratio B
P1153  HO2S Bank 2 Sensor 1 - Insufficient Switching B
P1154  HO2S Bank 2 Sensor 1 - Transition Time Ratio B
P1258  Engine Over-Temperature Condition A
P1336  Crankshaft Position System Variation Not Learned A
P1359  Ignition Control Circuit Group "A" B
P1360  Ignition Control Circuit Group "B" B
P1372  Crankshaft Position Sensor "A" & "B" Correlation B
P1380  EBTCM DTC Detected Rough Road Data Unstable C
P1381  Misfire Detected - No EBTCM/PCM Serial Data C
P1404  EGR System Performance A
P1415  AIR System - Bank 1 B
P1416  AIR System - Bank 2 B
P1441  EVAP Emission System Flow During Non-Purge B
P1545 (6) A/C Clutch Relay Control Circuit C
P1546 (6) A/C Compressor Clutch Relay Circuit - High Voltage C
P1554 (8) Cruise Engaged Circuit High Voltage C
P1560 (8) Cruise Control System - Transaxle Not In Drive C
P1564 (8) Cruise Control System - Vehicle Acceleration Too High C
P1566 (8) Cruise Control System - Engine RPM Too High C
P1567 (8) Cruise Control System - Active Braking Control Active C
P1570 (8) Cruise Control System - Traction Control Active C
P1571 (10) Traction Control Torque Request Circuit C
P1574 (8) EBTCM System - Stop Lamp Switch Circuit - High Voltage C
P1575 (8) Extended Travel Brake Switch Circuit Voltage High C
P1585 (8) Cruise Control - Inhibit Signal Circuit Malfunction C
P1600  PCM Memory N/A
P1617 (4) Low Oil Level Switch Circuit Malfunction C
P1621  PCM Memory B
P1624  Customer Snapshot Data Available C
P1627  PCM Memory N/A
P1630 (11) Theft Deterrent System - PCM In Learn Mode C
P1631 (11) Theft Deterrent System - Password Incorrect C
P1633  Improper Ignition 0 Input C
P1634  Improper Ignition 1 Input C
P1635  5-Volt Reference 1 Circuit B
P1639  5-Volt Reference 2 Circuit B
P1644 (10) Delivered Torque Signal Voltage Invalid C
P1680  PCM Memory N/A
P1681  PCM Memory N/A
P1683  PCM Memory N/A
P1811 (3) Maximum Adapt & Long Shift C
P1814 (3) Torque Converter Overstressed C
P1820 (3) Internal Mode Switch Circuit "A" B
P1822 (3) Internal Mode Switch Circuit "B" B
P1823 (3) Internal Mode Switch Circuit "P" B
P1825 (3) Internal Mode Switch - Invalid Range N/A
P1842 (3) 1-2 Shift Solenoid Circuit Low Voltage B
P1843 (3) 1-2 Shift Solenoid Circuit High Voltage B
P1845 (3) 2-3 Shift Solenoid Circuit Low Voltage A
P1847 (3) 2-3 Shift Solenoid Circuit High Voltage A
P1860 (3) TCC PWM Solenoid Circuit Electrical Malfunction B
P1868 (3) Transmission Fluid Life C
P2610  Control Module Random Access Memory A
UXXXX (2) Communication Malfunction N/A
(1) For description of the different code types, see CODE TYPES  under SELF-DIAGNOSTIC SYSTEM.
(2) Diagnose DTCs as necessary. See DIAGNOSTIC TROUBLE CODE DEFINITIONS in appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
(3) See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.
(4) See appropriate ANALOG INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT.
(5) See appropriate ELECTRIC COOLING FANS article in ENGINES.
(6) See appropriate A/C-HEATER SYSTEMS article in AIR CONDITIONING & HEATING.
(7) See appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
(8) See appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.
(9) See appropriate STARTERS article in STARTING & CHARGING SYSTEMS.
(10) See appropriate ANTI-LOCK article in BRAKES.
(11) See appropriate ANTI-THEFT SYSTEMS article in ACCESSORIES & EQUIPMENT.
scientia non olet · About LEMON Manuals