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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 1993–2016 of 8256

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P0815Upshift Switch CircuitCheck soonTransmission Issues30–120 minutes for initial diagnosisP0815 relates to upshift switch circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0816Downshift Switch CircuitCheck soonTransmission Issues30–120 minutes for initial diagnosisP0816 relates to downshift switch circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0817Starter Disable Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0817 relates to starter disable circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P0818Driveline Disconnect Switch Input CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0818 relates to driveline disconnect switch input circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0819Up and Down Shift Switch to Transmission Range CorrelationCheck soonTransmission Issues30–120 minutes for initial diagnosisP0819 relates to up and down shift switch to transmission range correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P081AStarter Disable Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP081A relates to starter disable circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P081BStarter Disable Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP081B relates to starter disable circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P081CPark Input CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP081C relates to park input circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P081DNeutral Input CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP081D relates to neutral input circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P081EExcessive Clutch B SlippageCheck soonTransmission Issues30–120 minutes for initial diagnosisP081E relates to excessive clutch b slippage. Check the fault conditions and vehicle-specific procedure before replacing parts.P081FBrake Transmission Shift Interlock (BTSI) Signal CorrelationCheck soonTransmission Issues30–120 minutes for initial diagnosisP081F relates to brake transmission shift interlock (btsi) signal correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P0820Gear Lever X-Y Position Sensor CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0820 relates to gear lever x-y position sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0821Gear Lever X Position Sensor 1 CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0821 relates to gear lever x position sensor 1 circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0822Gear Lever Y Position Sensor 1 CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0822 relates to gear lever y position sensor 1 circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0823Gear Lever X Position Sensor 1 Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0823 relates to gear lever x position sensor 1 circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P0824Gear Lever Y Position Sensor 1 Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0824 relates to gear lever y position sensor 1 circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P0825Gear Lever Push-Pull Switch (Shift Anticipate)Check soonTransmission Issues30–120 minutes for initial diagnosisP0825 relates to gear lever push-pull switch (shift anticipate). Check the fault conditions and vehicle-specific procedure before replacing parts.P0826Up and Down Shift Switch CircuitCheck soonTransmission Issues30–120 minutes for initial diagnosisP0826 relates to up and down shift switch circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0827Up and Down Shift Switch Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP0827 relates to up and down shift switch circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0828Up and Down Shift Switch Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP0828 relates to up and down shift switch circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P08295-6 ShiftCheck soonTransmission Issues30–120 minutes for initial diagnosisP0829 relates to 5-6 shift. Check the fault conditions and vehicle-specific procedure before replacing parts.P082AGear Lever X Position Sensor 1 Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP082A relates to gear lever x position sensor 1 circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P082BGear Lever X Position Sensor 1 Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP082B relates to gear lever x position sensor 1 circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P082CGear Lever X Position Sensor 1 Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP082C relates to gear lever x position sensor 1 circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.