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Diagnostic Trouble Code Definitions

DTC IDENTIFICATION

DTC System Affected
P0031 (1) Heated Oxygen Sensor No. 1 - Heater Circuit - Low Input
P0032 (1) Heated Oxygen Sensor No. 1 - Heater Circuit - High Input
P0037 (1) Heated Oxygen Sensor No. 2 - Heater Circuit - Low Input
P0038 (1) Heated Oxygen Sensor No. 2 - Heater Circuit - High Input
P0101 (1) Mass Air Flow Sensor Circuit - Performance
P0102  Mass Air Flow Sensor Circuit - Low Input
P0103  Mass Air Flow Sensor Circuit - High Input
P0111 (1) Intake Air Temperature Sensor Circuit - Range/Performance
P0112  Intake Air Temperature Sensor Circuit - Low Input
P0113  Intake Air Temperature Sensor Circuit - High Input
P0116 (1) Engine Coolant Temperature Sensor Circuit - Range/Performance
P0117  Engine Coolant Temperature Sensor Circuit - Low Input
P0118  Engine Coolant Temperature Sensor Circuit - High Input
P0121 (1) Throttle Position Sensor Circuit - Range/Performance
P0122  Throttle Position Sensor Circuit - Low Input
P0123  Throttle Position Sensor Circuit - High Input
P0125 (1) Insufficient Coolant Temperature For Closed Loop Operation
P0131 (1) Heated Oxygen Sensor No. 1 Circuit - Low Input
P0132 (1) Heated Oxygen Sensor No. 1 Circuit - High Input
P0133 (1) Heated Oxygen Sensor No. 1 Circuit - Slow Response
P0134 (1) Heated Oxygen Sensor No. 1 Circuit - No Activity Detected
P0137 (1) Heated Oxygen Sensor No. 2 Circuit - Low Voltage
P0138 (1) Heated Oxygen Sensor No. 2 Circuit - High Voltage
P0140 (1) Heated Oxygen Sensor No. 2 Circuit - No Activity Detected
P0171 (1) System Too Lean
P0172 (1) System Too Rich
P0300 (2) Random Misfire Detected
P0301 (2) Cylinder No. 1 Misfire Detected
P0302 (2) Cylinder No. 2 Misfire Detected
P0303 (2) Cylinder No. 3 Misfire Detected
P0304 (2) Cylinder No. 4 Misfire Detected
P0327  Knock Sensor Circuit - Low Input
P0328  Knock Sensor Circuit - High Input
P0335  Crankshaft Position Sensor Circuit Malfunction
P0340  Camshaft Position Sensor Circuit Malfunction
P0401 (1) EGR - Insufficient Flow Detected
P0402 (1) EGR - Excessive Flow Detected
P0403  EGR Flow Malfunction
P0420 (1) Catalyst System - Low Efficiency
P0441 (1) EVAP System - Incorrect Purge Flow
P0442 (1) EVAP System - Small Leak Detected
P0443 (1) EVAP System Purge Control Valve - Circuit Malfunction
P0446 (1) EVAP System Vent Control Valve - Circuit Malfunction
P0451 (1) EVAP System Pressure Sensor - Range/Performance
P0452 (1) EVAP Fuel Tank Pressure Sensor - Low Input
P0453 (1) EVAP Fuel Tank Pressure Sensor - High Input
P0455  EVAP System - Large Leak Detected
P0461 (1) Fuel Level Sensor Circuit - Range/Performance
P0463 (1) Fuel Level Sensor Circuit - High Input
P0464 (1) Fuel Level Sensor Circuit - Intermittent
P0500 (1) Vehicle Speed Sensor Malfunction
P0506 (1) Idle Air Control - RPM Lower Than Expected
P0507 (1) Idle Air Control - RPM Higher Than Expected
P0601  Internal Control Module Memory Check Sum Error
P0616  Starter Relay Circuit - Low Input
P0617  Starter Relay Circuit - High Input
P0705 (4) Automatic Transmission
P0720 (4) Automatic Transmission
P0741 (4) Automatic Transmission
P0743 (4) Automatic Transmission
P0751 (4) Automatic Transmission
P0753 (4) Automatic Transmission
P0756 (4) Automatic Transmission
P0758 (4) Automatic Transmission
P1510  PCM Back-Up Power Supply Malfunction
P1875 (4) Automatic Transmission
P2025 (1) EVAP System Fuel Vapor Temperature Sensor - Performance
P2026 (1) EVAP System Fuel Vapor Temperature Sensor - Low Voltage
P2027 (1) EVAP System Fuel Vapor Temperature Sensor - High Voltage
P2227 (1) Barometric Pressure Sensor - Performance
P2228 (1) Barometric Pressure Sensor - Signal Low
P2229 (1) Barometric Pressure Sensor - Signal High
(1) These DTCs require 2 consecutive drive cycles to set MIL.
(2) If misfire is sufficient enough to cause catalyst damage, Malfunction Indicator Light (MIL) should flash. If misfire is not sufficient enough to cause catalyst damage, DTC requires 2 consecutive drive cycles to set MIL
(3) Vehicles not equipped with On-Board Refueling Vapor Recovery (ORVR) system. If EVAP canister is installed in front of fuel tank, vehicle is equipped with ORVR. If EVAP canister is installed in engine compartment, vehicle is not equipped with ORVR.
(4) See appropriate DIAGNOSTIC article in AUTOMATIC TRANSMISSIONS.
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