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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.

Check soon P · Powertrain 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 4921–4944 of 6682

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P2799Electric/Auxiliary Transmission Fluid Pump A Control Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2799 relates to electric/auxiliary transmission fluid pump a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P279ATransfer Case Gear High Incorrect RatioCheck soonTransmission Issues30–120 minutes for initial diagnosisP279A relates to transfer case gear high incorrect ratio. Check the fault conditions and vehicle-specific procedure before replacing parts.P279BTransfer Case Gear Low Incorrect RatioCheck soonTransmission Issues30–120 minutes for initial diagnosisP279B relates to transfer case gear low incorrect ratio. Check the fault conditions and vehicle-specific procedure before replacing parts.P279CTransfer Case Gear Neutral Incorrect RatioCheck soonTransmission Issues30–120 minutes for initial diagnosisP279C relates to transfer case gear neutral incorrect ratio. Check the fault conditions and vehicle-specific procedure before replacing parts.P279DFour Wheel Drive (4WD) Range Signal CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP279D relates to four wheel drive (4wd) range signal circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P279EFour Wheel Drive (4WD) Range Signal Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP279E relates to four wheel drive (4wd) range signal circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P279FFour Wheel Drive (4WD) Range Signal Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP279F relates to four wheel drive (4wd) range signal circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P27A0Four Wheel Drive (4WD) Range Signal Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP27A0 relates to four wheel drive (4wd) range signal circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P27A1Electric/Auxiliary Transmission Fluid Pump A Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP27A1 relates to electric/auxiliary transmission fluid pump a stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P27A2Electric/Auxiliary Transmission Fluid Pump B Control Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP27A2 relates to electric/auxiliary transmission fluid pump b control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P27A3Electric/Auxiliary Transmission Fluid Pump B Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP27A3 relates to electric/auxiliary transmission fluid pump b performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P27A4Electric/Auxiliary Transmission Fluid Pump B Control Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP27A4 relates to electric/auxiliary transmission fluid pump b control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P27A5Electric/Auxiliary Transmission Fluid Pump B Control Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP27A5 relates to electric/auxiliary transmission fluid pump b control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P27A6Electric/Auxiliary Transmission Fluid Pump B Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP27A6 relates to electric/auxiliary transmission fluid pump b stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P27A7Pressure Control Solenoid A Data IncompatibleCheck soonTransmission Issues30–120 minutes for initial diagnosisP27A7 relates to pressure control solenoid a data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P27A8Pressure Control Solenoid B Data IncompatibleCheck soonTransmission Issues30–120 minutes for initial diagnosisP27A8 relates to pressure control solenoid b data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P27A9Pressure Control Solenoid C Data IncompatibleCheck soonTransmission Issues30–120 minutes for initial diagnosisP27A9 relates to pressure control solenoid c data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P27AAPressure Control Solenoid D Data IncompatibleCheck soonTransmission Issues30–120 minutes for initial diagnosisP27AA relates to pressure control solenoid d data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P27ABPressure Control Solenoid E Data IncompatibleCheck soonTransmission Issues30–120 minutes for initial diagnosisP27AB relates to pressure control solenoid e data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P27ACPressure Control Solenoid F Data IncompatibleCheck soonTransmission Issues30–120 minutes for initial diagnosisP27AC relates to pressure control solenoid f data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P27ADPressure Control Solenoid G Data IncompatibleCheck soonTransmission Issues30–120 minutes for initial diagnosisP27AD relates to pressure control solenoid g data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P27AEPressure Control Solenoid H Data IncompatibleCheck soonTransmission Issues30–120 minutes for initial diagnosisP27AE relates to pressure control solenoid h data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P27AFPressure Control Solenoid J Data IncompatibleCheck soonTransmission Issues30–120 minutes for initial diagnosisP27AF relates to pressure control solenoid j data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.P27B0Pressure Control Solenoid K Data IncompatibleCheck soonTransmission Issues30–120 minutes for initial diagnosisP27B0 relates to pressure control solenoid k data incompatible. Check the fault conditions and vehicle-specific procedure before replacing parts.