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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 505–528 of 833

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P2770Torque Converter Clutch Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2770 relates to torque converter clutch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2775Upshift Switch Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP2775 relates to upshift switch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2776Upshift Switch Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP2776 relates to upshift switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2777Upshift Switch Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2777 relates to upshift switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2778Upshift Switch Circuit Intermittent/ErraticCheck soonTransmission Issues30–120 minutes for initial diagnosisP2778 relates to upshift switch circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2779Downshift Switch Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP2779 relates to downshift switch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P277AElectric/Auxiliary Transmission Fluid Pump B Hydraulic LeakageCheck soonTransmission Issues30–120 minutes for initial diagnosisP277A relates to electric/auxiliary transmission fluid pump b hydraulic leakage. Check the fault conditions and vehicle-specific procedure before replacing parts.P277BElectric/Auxiliary Transmission Fluid Pump B Driver Circuit PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP277B relates to electric/auxiliary transmission fluid pump b driver circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P277CElectric/Auxiliary Transmission Fluid Pump B Motor StalledCheck soonTransmission Issues30–120 minutes for initial diagnosisP277C relates to electric/auxiliary transmission fluid pump b motor stalled. Check the fault conditions and vehicle-specific procedure before replacing parts.P277EClutch A Unexpected Mechanical Gear DisengagementCheck soonTransmission Issues30–120 minutes for initial diagnosisP277E relates to clutch a unexpected mechanical gear disengagement. Check the fault conditions and vehicle-specific procedure before replacing parts.P277FClutch B Unexpected Mechanical Gear DisengagementCheck soonTransmission Issues30–120 minutes for initial diagnosisP277F relates to clutch b unexpected mechanical gear disengagement. Check the fault conditions and vehicle-specific procedure before replacing parts.P2780Downshift Switch Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP2780 relates to downshift switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2781Downshift Switch Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2781 relates to downshift switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2782Downshift Switch Circuit Intermittent/ErraticCheck soonTransmission Issues30–120 minutes for initial diagnosisP2782 relates to downshift switch circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2783Torque Converter Temperature Too HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2783 relates to torque converter temperature too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2785Clutch Actuator Temperature Too HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2785 relates to clutch actuator temperature too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2786Gear Shift Actuator Temperature Too HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2786 relates to gear shift actuator temperature too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2787Clutch A Temperature Too HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2787 relates to clutch a temperature too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2788Auto Shift Manual Adaptive Learning at LimitCheck soonTransmission Issues30–120 minutes for initial diagnosisP2788 relates to auto shift manual adaptive learning at limit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2789Clutch A Adaptive Learning at LimitCheck soonTransmission Issues30–120 minutes for initial diagnosisP2789 relates to clutch a adaptive learning at limit. Check the fault conditions and vehicle-specific procedure before replacing parts.P278FClutch B Adaptive Learning at LimitCheck soonTransmission Issues30–120 minutes for initial diagnosisP278F relates to clutch b adaptive learning at limit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2793Gear Shift Direction CircuitCheck soonTransmission Issues30–120 minutes for initial diagnosisP2793 relates to gear shift direction circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2794Gear Shift Direction Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP2794 relates to gear shift direction circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2795Gear Shift Direction Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2795 relates to gear shift direction circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.