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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.

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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 5425–5448 of 8256

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P284DShift Fork A Unrequested MovementCheck soonTransmission Issues30–120 minutes for initial diagnosisP284D relates to shift fork a unrequested movement. Check the fault conditions and vehicle-specific procedure before replacing parts.P284EShift Fork B Unrequested MovementCheck soonTransmission Issues30–120 minutes for initial diagnosisP284E relates to shift fork b unrequested movement. Check the fault conditions and vehicle-specific procedure before replacing parts.P284FShift Fork C Unrequested MovementCheck soonTransmission Issues30–120 minutes for initial diagnosisP284F relates to shift fork c unrequested movement. Check the fault conditions and vehicle-specific procedure before replacing parts.P2850Shift Fork D Unrequested MovementCheck soonTransmission Issues30–120 minutes for initial diagnosisP2850 relates to shift fork d unrequested movement. Check the fault conditions and vehicle-specific procedure before replacing parts.P2851Shift Fork Position Sensor A/B CorrelationCheck soonTransmission Issues30–120 minutes for initial diagnosisP2851 relates to shift fork position sensor a/b correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2852Shift Fork Position Sensor C/D CorrelationCheck soonTransmission Issues30–120 minutes for initial diagnosisP2852 relates to shift fork position sensor c/d correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2853Clutch A Pressure Discharge PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP2853 relates to clutch a pressure discharge performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2854Clutch B Pressure Discharge PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP2854 relates to clutch b pressure discharge performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2855Clutch A Pressure Charge PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP2855 relates to clutch a pressure charge performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2856Clutch B Pressure Charge PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP2856 relates to clutch b pressure charge performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2857Clutch A Pressure Engagement Performance/Too LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP2857 relates to clutch a pressure engagement performance/too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2858Clutch B Pressure Engagement Performance/Too LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP2858 relates to clutch b pressure engagement performance/too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2859Clutch A Pressure Disengagement Performance/Too LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP2859 relates to clutch a pressure disengagement performance/too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P285AClutch B Pressure Disengagement Performance/Too LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP285A relates to clutch b pressure disengagement performance/too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P285BShift Fork A Actuator Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP285B relates to shift fork a actuator circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P285CShift Fork A Actuator PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP285C relates to shift fork a actuator performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P285DShift Fork A Actuator Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP285D relates to shift fork a actuator circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P285EShift Fork A Actuator Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP285E relates to shift fork a actuator circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P285FShift Fork B Actuator Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP285F relates to shift fork b actuator circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2860Shift Fork B Actuator PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP2860 relates to shift fork b actuator performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2861Shift Fork B Actuator Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP2861 relates to shift fork b actuator circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2862Shift Fork B Actuator Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2862 relates to shift fork b actuator circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2863Shift Fork E Position CircuitCheck soonTransmission Issues30–120 minutes for initial diagnosisP2863 relates to shift fork e position circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2864Shift Fork E Position Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP2864 relates to shift fork e position circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.