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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.

Fuel System Check soon Clear all

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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 673–696 of 975

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P2674Injection Pump Fuel Calibration Not LearnedCheck soonFuel System30–120 minutes for initial diagnosisP2674 relates to injection pump fuel calibration not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.P2687Fuel Supply Heater Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP2687 relates to fuel supply heater control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2688Fuel Supply Heater Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2688 relates to fuel supply heater control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2689Fuel Supply Heater Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2689 relates to fuel supply heater control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P268AFuel Injector Calibration Not Learned/ProgrammedCheck soonFuel System30–120 minutes for initial diagnosisP268A relates to fuel injector calibration not learned/programmed. Check the fault conditions and vehicle-specific procedure before replacing parts.P268BHigh Pressure Fuel Pump Calibration Not Learned/ProgrammedCheck soonFuel System30–120 minutes for initial diagnosisP268B relates to high pressure fuel pump calibration not learned/programmed. Check the fault conditions and vehicle-specific procedure before replacing parts.P268CCylinder 1 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP268C relates to cylinder 1 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P268DCylinder 2 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP268D relates to cylinder 2 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P268ECylinder 3 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP268E relates to cylinder 3 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P268FCylinder 4 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP268F relates to cylinder 4 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P2690Cylinder 5 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP2690 relates to cylinder 5 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P2691Cylinder 6 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP2691 relates to cylinder 6 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P2692Cylinder 7 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP2692 relates to cylinder 7 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P2693Cylinder 8 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP2693 relates to cylinder 8 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P2694Cylinder 9 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP2694 relates to cylinder 9 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P2695Cylinder 10 Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP2695 relates to cylinder 10 injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P2696Injector Data IncompatibleCheck soonFuel System30–120 minutes for initial diagnosisP2696 relates to injector data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P2697Exhaust Aftertreatment Fuel Injector A Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP2697 relates to exhaust aftertreatment fuel injector a circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2698Exhaust Aftertreatment Fuel Injector A PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2698 relates to exhaust aftertreatment fuel injector a performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2699Exhaust Aftertreatment Fuel Injector A Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2699 relates to exhaust aftertreatment fuel injector a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P269AExhaust Aftertreatment Fuel Injector A Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP269A relates to exhaust aftertreatment fuel injector a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P26B3Fuel Shutoff Valve A Control Circuit Performance/Stuck OffCheck soonFuel System30–120 minutes for initial diagnosisP26B3 relates to fuel shutoff valve a control circuit performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P26B4Fuel Shutoff Valve A Control Circuit Stuck OnCheck soonFuel System30–120 minutes for initial diagnosisP26B4 relates to fuel shutoff valve a control circuit stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P26B5Fuel Shutoff Valve B Control Circuit Performance/Stuck OffCheck soonFuel System30–120 minutes for initial diagnosisP26B5 relates to fuel shutoff valve b control circuit performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.