OBD2 Trouble Codes
Browse 543 diagnostic trouble codes — each with symptoms, causes, cost estimates, and repair guidance.
Fuel Delivery Error
O2 Sensor Circuit Malfunction (Bank 2, Sensor 1)
O2 Sensor Circuit Low Voltage (Bank 2, Sensor 1)
O2 Sensor Circuit High Voltage (Bank 2, Sensor 1)
O2 Sensor Circuit Slow Response (Bank 2, Sensor 1)
O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 1)
O2 Sensor Heater Circuit Malfunction (Bank 2, Sensor 1)
O2 Sensor Circuit Malfunction (Bank 2, Sensor 2)
O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2)
O2 Sensor Circuit High Voltage (Bank 2, Sensor 2)
O2 Sensor Circuit Slow Response (Bank 2, Sensor 2)
O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 2)
O2 Sensor Heater Circuit Malfunction (Bank 2, Sensor 2)
O2 Sensor Circuit Malfunction (Bank 2, Sensor 3)
O2 Sensor Circuit Low Voltage (Bank 2, Sensor 3)
O2 Sensor Circuit High Voltage (Bank 2, Sensor 3)
O2 Sensor Circuit Slow Response (Bank 2, Sensor 3)
O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 3)
O2 Sensor Heater Circuit Malfunction (Bank 2, Sensor 3)
Fuel Temperature Too High
Incorrect Fuel Composition
Fuel Trim Malfunction (Bank 1)
System Too Lean (Bank 1)
System Too Rich (Bank 1)
System Too Lean (Bank 2)
System Too Rich (Bank 2)
Fuel Rail Pressure Sensor Circuit Range/Performance
Injector Circuit Malfunction
Injector Circuit Malfunction - Cylinder 1
Injector Circuit Malfunction - Cylinder 2
Injector Circuit Malfunction - Cylinder 3
Injector Circuit Malfunction - Cylinder 4
Injector Circuit Malfunction - Cylinder 5
Injector Circuit Malfunction - Cylinder 6
Injector Circuit Malfunction - Cylinder 7
Injector Circuit Malfunction - Cylinder 8
Engine Over Temperature
Transmission Over Temperature Condition
Engine Overspeed Condition
Throttle/Pedal Position Sensor/Switch B Circuit
Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance
Throttle/Pedal Position Sensor/Switch B Circuit Low
Throttle/Pedal Position Sensor/Switch B Circuit High
Fuel Pump Primary Circuit Malfunction
Fuel Pump Secondary Circuit Low
Turbocharger/Supercharger "A" Overboost Condition
Turbocharger/Supercharger Wastegate Solenoid "A" Malfunction
Turbocharger/Supercharger Wastegate Solenoid "A" Range/Performance
Turbocharger/Supercharger Wastegate Solenoid "A" Circuit Low
Injection Pump Fuel Metering Control "A" Malfunction (Cam/Rotor/Injector)
Cylinder 1 Injector Circuit Low
Cylinder 1 Injector Circuit High
Cylinder 1 Contribution/Balance
Cylinder 2 Injector Circuit Low
Cylinder 2 Injector Circuit High
Cylinder 2 Contribution/Balance
Cylinder 3 Injector Circuit Low
Cylinder 3 Injector Circuit High
Cylinder 3 Contribution/Balance
Turbocharger/Supercharger Underboost