Check-engine codes
What does my check-engine code mean?
Plain-English explanations for OBD-II trouble codes: what the code means, the most likely causes, symptoms, and how much labour a repair usually takes.
P0 codes · Powertrain (generic)
- P0259Injection Pump Fuel Metering Control B High (Cam/Rotor/Injector)
- P025AFuel Pump Module A Control Circuit/Open
- P025BFuel Pump Module A Control Circuit Range/Performance
- P025CFuel Pump Module A Control Circuit Low
- P025DFuel Pump Module A Control Circuit High
- P025ETurbocharger/Supercharger Boost Sensor A Intermittent/Erratic
- P025FTurbocharger/Supercharger Boost Sensor B Intermittent/Erratic
- P0260Cylinder 1 Injector Circuit Performance
- P0261Cylinder 1 Injector Circuit Low
- P0262Cylinder 1 Injector Circuit High
- P0263Cylinder 1 Contribution/Balance Fault
- P0264Cylinder 2 Injector Circuit Low
- P0265Cylinder 2 Injector Circuit High
- P0266Cylinder 2 Contribution/Balance Fault
- P0267Cylinder 3 Injector Circuit Low
- P0268Cylinder 3 Injector Circuit High
- P0269Cylinder 3 Contribution/Balance Fault
- P026ACharge Air Cooler Efficiency Below Threshold
- P026BInjection Timing Performance
- P026CFuel Injection Quantity A Lower Than Expected
- P026DFuel Injection Quantity A Higher Than Expected
- P026ECharge Air Cooler Coolant Pump A Performance
- P026FCoolant Thermostat Performance
- P0270Cylinder 4 Injector Circuit Low
- P0271Cylinder 4 Injector Circuit High
- P0272Cylinder 4 Contribution/Balance Fault
- P0273Cylinder 2 Contribution/Balance
- P0274Cylinder 5 Injector A Circuit High
- P0275Cylinder 5 Contribution/Balance
- P0276Cylinder 6 Injector A Circuit Low
- P0277Cylinder 6 Injector A Circuit High
- P0278Cylinder 6 Contribution/Balance
- P0279Cylinder 7 Injector A Circuit Low
- P027AFuel Pump Module B Control Circuit/Open
- P027BFuel Pump Module B Control Circuit Range/Performance
- P027CFuel Pump Module B Control Circuit Low
- P027DFuel Pump Module B Control Circuit High
- P027ECold Start Fuel Injection Quantity A Lower Than Expected
- P027FCold Start Fuel Injection Quantity A Higher Than Expected
- P0280Cylinder 7 Injector A Circuit High
- P0281Cylinder 7 Contribution/Balance
- P0282Cylinder 8 Injector A Circuit Low
- P0283Cylinder 8 Injector A Circuit High
- P0284Cylinder 8 Contribution/Balance
- P0285Cylinder 9 Injector A Circuit Low
- P0286Cylinder 9 Injector A Circuit High
- P0287Cylinder 9 Contribution/Balance
- P0288Cylinder 10 Injector A Circuit Low
- P0289Cylinder 10 Injector A Circuit High
- P028ACharge Air Cooler Cooling Fan Control Circuit/Open
- P028BCharge Air Cooler Cooling Fan Performance/Stuck Off
- P028CCharge Air Cooler Cooling Fan Stuck On
- P028DCharge Air Cooler Cooling Fan Control Circuit Low
- P028ECharge Air Cooler Cooling Fan Control Circuit High
- P028FCharge Air Cooler Cooling Fan Control Circuit Driver Performance
- P0290Cylinder 10 Contribution/Balance
- P0291Cylinder 11 Injector A Circuit Low
- P0292Cylinder 11 Injector A Circuit High
- P0293Cylinder 11 Contribution/Balance
- P0294Cylinder 12 Injector A Circuit Low
- P0295Cylinder 12 Injector A Circuit High
- P0296Cylinder 12 Contribution/Balance
- P0297Vehicle Overspeed Condition
- P0298Engine Oil Over Temperature
- P0299Turbocharger/Supercharger "A" Underboost Condition
- P029ACylinder 1 - Fuel Trim at Max Limit
- P029BCylinder 1 - Fuel Trim at Min Limit
- P029CCylinder 1 - Injector Restricted
- P029DCylinder 1 - Injector Leaking
- P029ECylinder 2 - Fuel Trim at Max Limit
- P029FCylinder 2 - Fuel Trim at Min Limit
- P02A0Cylinder 2 - Injector Restricted
- P02A1Cylinder 2 - Injector Leaking
- P02A2Cylinder 3 - Fuel Trim at Max Limit
- P02A3Cylinder 3 - Fuel Trim at Min Limit
- P02A4Cylinder 3 - Injector Restricted
- P02A5Cylinder 3 - Injector Leaking
- P02A6Cylinder 4 - Fuel Trim at Max Limit
- P02A7Cylinder 4 - Fuel Trim at Min Limit
- P02A8Cylinder 4 - Injector Restricted
- P02A9Cylinder 4 - Injector Leaking
- P02AACylinder 5 - Fuel Trim at Max Limit
- P02ABCylinder 5 - Fuel Trim at Min Limit
- P02ACCylinder 5 - Injector Restricted
- P02ADCylinder 5 - Injector Leaking
- P02AECylinder 6 - Fuel Trim at Max Limit
- P02AFCylinder 6 - Fuel Trim at Min Limit
- P02B0Cylinder 6 - Injector Restricted
- P02B1Cylinder 6 - Injector Leaking
- P02B2Cylinder 7 - Fuel Trim at Max Limit
- P02B3Cylinder 7 - Fuel Trim at Min Limit
- P02B4Cylinder 7 - Injector Restricted
- P02B5Cylinder 7 - Injector Leaking
- P02B6Cylinder 8 - Fuel Trim at Max Limit
- P02B7Cylinder 8 - Fuel Trim at Min Limit
- P02B8Cylinder 8 - Injector Restricted
- P02B9Cylinder 8 - Injector Leaking
- P02BACylinder 9 - Fuel Trim at Max Limit
- P02BBCylinder 9 - Fuel Trim at Min Limit
- P02BCCylinder 9 - Injector Restricted
Code data: OBDex open dataset (CC0), reviewed and rewritten for drivers. Always confirm a diagnosis before replacing parts.