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Find codes by symptomChoose what you notice to search matching code guides.

Rough idle or shakingVibration while stopped Hard to startLong cranking or no-start Engine stallsCuts out at idle or on the road Hesitates or loses powerSlow response when accelerating Battery light is onCharging system warning Harsh gear changesDelayed or rough shifting

A symptom can have several causes. Treat matching codes as clues and follow the diagnostic checks in each guide.

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Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

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All severities9253 Low priority305 Check soon8256 Urgent621

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All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 769–792 of 8256

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P025CFuel Pump Module A Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP025C relates to fuel pump module a control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P025DFuel Pump Module A Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP025D relates to fuel pump module a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P025ETurbocharger/Supercharger Boost Sensor A Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP025E relates to turbocharger/supercharger boost sensor a intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P025FTurbocharger/Supercharger Boost Sensor B Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP025F relates to turbocharger/supercharger boost sensor b intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P0260Injection Pump Fuel Metering Control B Intermittent (Cam/Rotor/Injector)Check soonFuel System30–120 minutes for initial diagnosisP0260 relates to injection pump fuel metering control b intermittent (cam/rotor/injector). Check the fault conditions and vehicle-specific procedure before replacing parts.P0261Cylinder 1 Injector A Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP0261 relates to cylinder 1 injector a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0262Cylinder 1 Injector A Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP0262 relates to cylinder 1 injector a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0263Cylinder 1 Contribution/BalanceCheck soonEngine Problems30–120 minutes for initial diagnosisP0263 relates to cylinder 1 contribution/balance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0264Cylinder 2 Injector A Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP0264 relates to cylinder 2 injector a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0265Cylinder 2 Injector A Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP0265 relates to cylinder 2 injector a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0266Cylinder 2 Contribution/BalanceCheck soonEngine Problems30–120 minutes for initial diagnosisP0266 relates to cylinder 2 contribution/balance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0267Cylinder 3 Injector A Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP0267 relates to cylinder 3 injector a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0268Cylinder 3 Injector A Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP0268 relates to cylinder 3 injector a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0269Cylinder 3 Contribution/BalanceCheck soonEngine Problems30–120 minutes for initial diagnosisP0269 relates to cylinder 3 contribution/balance. Check the fault conditions and vehicle-specific procedure before replacing parts.P026ACharge Air Cooler Efficiency Below ThresholdCheck soonSensors & Electronics30–120 minutes for initial diagnosisP026A relates to charge air cooler efficiency below threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P026BInjection Timing PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP026B relates to injection timing performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P026CFuel Injection Quantity A Lower Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP026C relates to fuel injection quantity a lower than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P026DFuel Injection Quantity A Higher Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP026D relates to fuel injection quantity a higher than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P026ECharge Air Cooler Coolant Pump A PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP026E relates to charge air cooler coolant pump a performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P026FCoolant Thermostat PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP026F relates to coolant thermostat performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0270Cylinder 4 Injector A Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP0270 relates to cylinder 4 injector a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0271Cylinder 4 Injector A Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP0271 relates to cylinder 4 injector a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0272Cylinder 4 Contribution/BalanceCheck soonEngine Problems30–120 minutes for initial diagnosisP0272 relates to cylinder 4 contribution/balance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0273Cylinder 5 Injector A Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP0273 relates to cylinder 5 injector a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.