NOTE: Bank 1 refers to engine performance component located on left cylinder bank. Bank 2 refers to engine performance component located on right cylinder bank.

DIAGNOSTIC TROUBLE CODE DEFINITIONS

DTC

System Affected

P0031 ⁽¹⁾

Bank 1 Heated Oxygen Sensor No. 1 Heater Circuit - Low Voltage

P0032 ⁽¹⁾

Bank 1 Heated Oxygen Sensor No. 1 Heater Circuit - High Voltage

P0037 ⁽¹⁾

Bank 1 Heated Oxygen Sensor No. 2 Heater Circuit - Low Voltage

P0038 ⁽¹⁾

Bank 1 Heated Oxygen Sensor No. 2 Heater Circuit - High Voltage

P0051 ⁽¹⁾

Bank 2 Heated Oxygen Sensor No. 1 Heater Circuit - Low Voltage

P0052 ⁽¹⁾

Bank 2 Heated Oxygen Sensor No. 1 Heater Circuit - High Voltage

P0057 ⁽¹⁾

Bank 2 Heated Oxygen Sensor No. 2 Heater Circuit - Low Voltage

P0058 ⁽¹⁾

Bank 2 Heated Oxygen Sensor No. 2 Heater Circuit - High Voltage

P0101 ⁽¹⁾

Mass Air Flow Sensor - Performance Problem

P0102

Mass Air Flow Sensor Circuit - Low Voltage

P0103

Mass Air Flow Sensor Circuit - High Voltage

P0107 ⁽¹⁾

Manifold Absolute Pressure Sensor Circuit - Low Input

P0108 ⁽¹⁾

Manifold Absolute Pressure Sensor Circuit - High Input

P0111 ⁽¹⁾

Intake Air Temperature Sensor Circuit - Range/Performance Problem

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 Problem

P0117

Engine Coolant Temperature Sensor Circuit - Low Input

P0118

Engine Coolant Temperature Sensor Circuit - High Input

P0121 ⁽¹⁾

Throttle Position Sensor Circuit - Range/Performance Problem

P0122

Throttle Position Sensor Circuit - Low Input

P0123

Throttle Position Sensor Circuit - High Input

P0125 ⁽¹⁾

Insufficient Coolant Temperature For Closed Loop Operation

P0128

Coolant Thermostat Malfunction

P0131 ⁽¹⁾

Bank 1 HO2S No. 1 Circuit - Low Voltage

P0132 ⁽¹⁾

Bank 1 HO2S No. 1 Circuit - High Voltage

P0133 ⁽¹⁾

Bank 1 HO2S No. 1 Circuit - Slow Response Time

P0134 ⁽¹⁾

Bank 1 HO2S No. 1 Circuit - No Activity Detected

P0137 ⁽¹⁾

Bank 1 HO2S No. 2 - Low Voltage

P0138 ⁽¹⁾

Bank 1 HO2S No. 2 Circuit - High Voltage

P0140 ⁽¹⁾

Bank 1 HO2S No. 2 Circuit - No Activity Detected

P0151 ⁽¹⁾

Bank 2 HO2S No. 1 Circuit - Low Voltage

P0152 ⁽¹⁾

Bank 2 HO2S No. 1 Circuit - High Voltage

P0153 ⁽¹⁾

Bank 2 HO2S No. 1 Circuit - Slow Response - 2.5L

P0153 ⁽¹⁾

Bank 2 HO2S No. 1 Circuit - Slow Response - 2.7L

P0154 ⁽¹⁾

Bank 2 HO2S No. 1 Circuit - No Activity Detected

P0157 ⁽¹⁾

Bank 2 HO2S No. 2 - Low Voltage

P0158 ⁽¹⁾

Bank 2 HO2S No. 2 Circuit - High Voltage

P0160 ⁽¹⁾

Bank 2 HO2S No. 2 Circuit - No Activity Detected

P0171 ⁽¹⁾

Bank 1 Fuel System Too Lean

P0172 ⁽¹⁾

Bank 1 Fuel System Too Rich

P0174 ⁽¹⁾

Bank 2 Fuel System Too Lean

P0175 ⁽¹⁾

Bank 2 Fuel 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

P0305 ⁽²⁾

Cylinder No. 5 - Misfire Detected

P0306 ⁽²⁾

Cylinder No. 6 - 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

P0402 ⁽¹⁾

EGR Excessive Flow Detected

P0403

EGR Flow Circuit Malfunction

P0420 ⁽¹⁾

Bank 1 Catalyst System - Low Efficiency

P0430 ⁽¹⁾

Bank 2 Catalyst System - Low Efficiency

P0441 ⁽¹⁾

EVAP Control System - Incorrect Purge Flow

P0442 ⁽¹⁾

EVAP Control System - Small Leak Detected

P0443 ⁽¹⁾

EVAP Control System - Purge Control Valve Circuit Malfunction

P0446 ⁽¹⁾

EVAP Control System - Vent Valve Control Circuit Malfunction

P0449 ⁽¹⁾

EVAP Control System Vent Valve - Solenoid Circuit Malfunction

P0451 ⁽¹⁾

EVAP System Pressure Sensor - Range/Performance

P0452 ⁽¹⁾

EVAP System Pressure Sensor - Low Input

P0453 ⁽¹⁾

EVAP System Pressure Sensor - High Input

P0455 ⁽¹⁾

EVAP Control System - Gross Leak Detected

P0456 ⁽³⁾

EVAP System Leak Detected - Very Small Leak

P0461 ⁽¹⁾

Fuel Level Sensor Circuit - Performance Problem

P0463 ⁽¹⁾

Fuel Level Sensor Circuit - High Input

P0464 ⁽¹⁾

Fuel Level Sensor Circuit - Intermittent Problem

P0496 ⁽¹⁾

EVAP System - Flow During Non-Purge

P0500 ⁽¹⁾

Vehicle Speed Sensor Malfunction

P0506 ⁽¹⁾

Idle Air Control System - RPM Lower Than Expected

P0507 ⁽¹⁾

Idle Air Control System - RPM Higher Than Expected

P0601

Internal Control Module Memory Check Sum Error

P0616 ⁽¹⁾

Starter Relay Circuit - Low

P0617 ⁽¹⁾

Starter Relay Circuit - High

P0705 ⁽⁴⁾

Transmission Range Sensor Circuit Malfunction

P0707 ⁽⁴⁾

Transmission Range Sensor Circuit - Low Input

P0717 ⁽⁴⁾

Input/Turbine Speed Sensor Circuit - No Signal

P0722 ⁽⁴⁾

Output Speed Sensor Circuit - No Signal

P0741 ⁽⁴⁾

Torque Converter Clutch Circuit - Range/Performance Or Stuck Off

P0742 ⁽⁴⁾

Torque Converter Clutch Circuit - Stuck On

P0751 ⁽⁴⁾

Shift Solenoid "A" - Performance Or Stuck Off

P0752 ⁽⁴⁾

Shift Solenoid "A" - Performance Or Stuck On

P0756 ⁽⁴⁾

Shift Solenoid "B" - Performance Or Stuck Off

P0757 ⁽⁴⁾

Shift Solenoid "B" - Performance Or Stuck On

P0973 ⁽⁴⁾

Shift Solenoid "A" Control Circuit - Low

P0974 ⁽⁴⁾

Shift Solenoid "A" Control Circuit - High

P0976 ⁽⁴⁾

Shift Solenoid "B" Control Circuit - Low

P0977 ⁽⁴⁾

Shift Solenoid "B" Control Circuit - High

P1510

Engine Control Module Back-Up Power Supply Malfunction

P1740 ⁽⁴⁾

Cruise Control Signal Circuit

P1875 ⁽⁴⁾

4WD Low Switch Circuit Malfunction

P2025 ⁽¹⁾

EVAP Fuel Temperature Sensor - Performance

P2026

EVAP Fuel Temperature Sensor - Low Voltage

P2027

EVAP Fuel Temperature Sensor - High Voltage

P2227 ⁽¹⁾

Barometric Pressure Sensor - Performance Problem

P2228

Barometric Pressure Sensor - Low

P2229

Barometric Pressure Sensor - High

P2769 ⁽⁴⁾

Torque Converter Clutch Circuit - Low

P2770 ⁽⁴⁾

Torque Converter Clutch Circuit - 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⁾	This DTC requires 2 and/or 6 consecutive drive cycles to set MIL.

⁽⁴⁾	See appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.

Safety Warning

Diagnostic Trouble Code Definitions

Use the Manual With the Right Hardware

When to See a Mechanic