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9,253 diagnostic guides

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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 385–408 of 833

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P0987Transmission Fluid Pressure Sensor/Switch E CircuitCheck soonTransmission Issues30–120 minutes for initial diagnosisP0987 relates to transmission fluid pressure sensor/switch e circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0988Transmission Fluid Pressure Sensor/Switch E Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP0988 relates to transmission fluid pressure sensor/switch e circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0989Transmission Fluid Pressure Sensor/Switch E Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP0989 relates to transmission fluid pressure sensor/switch e circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0990Transmission Fluid Pressure Sensor/Switch E Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP0990 relates to transmission fluid pressure sensor/switch e circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0991Transmission Fluid Pressure Sensor/Switch E Circuit IntermittentCheck soonTransmission Issues30–120 minutes for initial diagnosisP0991 relates to transmission fluid pressure sensor/switch e circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P0992Transmission Fluid Pressure Sensor/Switch F CircuitCheck soonTransmission Issues30–120 minutes for initial diagnosisP0992 relates to transmission fluid pressure sensor/switch f circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0993Transmission Fluid Pressure Sensor/Switch F Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP0993 relates to transmission fluid pressure sensor/switch f circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0994Transmission Fluid Pressure Sensor/Switch F Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP0994 relates to transmission fluid pressure sensor/switch f circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0995Transmission Fluid Pressure Sensor/Switch F Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP0995 relates to transmission fluid pressure sensor/switch f circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0996Transmission Fluid Pressure Sensor/Switch F Circuit IntermittentCheck soonTransmission Issues30–120 minutes for initial diagnosisP0996 relates to transmission fluid pressure sensor/switch f circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P0997Shift Solenoid F Control Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP0997 relates to shift solenoid f control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0998Shift Solenoid F Control Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP0998 relates to shift solenoid f control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0999Shift Solenoid F Control Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP0999 relates to shift solenoid f control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P099AShift Solenoid G Control Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP099A relates to shift solenoid g control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P099BShift Solenoid G Control Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP099B relates to shift solenoid g control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P099CShift Solenoid G Control Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP099C relates to shift solenoid g control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P099DShift Solenoid H Control Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP099D relates to shift solenoid h control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P099EShift Solenoid H Control Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP099E relates to shift solenoid h control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P099FShift Solenoid H Control Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP099F relates to shift solenoid h control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A0Shift Solenoid G Control Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP09A0 relates to shift solenoid g control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P09A1Shift Solenoid H Control Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP09A1 relates to shift solenoid h control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P25E9Supercharger Disconnect Clutch Stuck OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP25E9 relates to supercharger disconnect clutch stuck open. Check the fault conditions and vehicle-specific procedure before replacing parts.P25EASupercharger Disconnect Clutch Stuck ClosedCheck soonTransmission Issues30–120 minutes for initial diagnosisP25EA relates to supercharger disconnect clutch stuck closed. Check the fault conditions and vehicle-specific procedure before replacing parts.P25EBSupercharger Disconnect Clutch Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP25EB relates to supercharger disconnect clutch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.