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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 361–384 of 1939

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P0555Brake Booster Pressure Sensor CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0555 relates to brake booster pressure sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P0556Brake Booster Pressure Sensor Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0556 relates to brake booster pressure sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0557Brake Booster Pressure Sensor Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0557 relates to brake booster pressure sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0558Brake Booster Pressure Sensor Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0558 relates to brake booster pressure sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0559Brake Booster Pressure Sensor Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0559 relates to brake booster pressure sensor circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P056ECold Start Turbocharger/Supercharger Boost Control A PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP056E relates to cold start turbocharger/supercharger boost control a performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P056FCold Start Turbocharger/Supercharger Boost Control B PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP056F relates to cold start turbocharger/supercharger boost control b performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P057ABrake Pedal Position Sensor A Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP057A relates to brake pedal position sensor a circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P057BBrake Pedal Position Sensor A Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP057B relates to brake pedal position sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P057CBrake Pedal Position Sensor A Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP057C relates to brake pedal position sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P057DBrake Pedal Position Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP057D relates to brake pedal position sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P057EBrake Pedal Position Sensor A Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP057E relates to brake pedal position sensor a circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P059AActive Grille Air Shutter A Position Sensor CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP059A relates to active grille air shutter a position sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P059BActive Grille Air Shutter A Position Sensor Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP059B relates to active grille air shutter a position sensor circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P059CActive Grille Air Shutter A Position Sensor Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP059C relates to active grille air shutter a position sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P059DActive Grille Air Shutter A Position Sensor Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP059D relates to active grille air shutter a position sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P059EActive Grille Air Shutter A Position Sensor Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP059E relates to active grille air shutter a position sensor circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P059FActive Grille Air Shutter A Performance/Stuck OffCheck soonSensors & Electronics30–120 minutes for initial diagnosisP059F relates to active grille air shutter a performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A0Active Grille Air Shutter A Stuck OnCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A0 relates to active grille air shutter a stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A1Active Grille Air Shutter A Position Sensor Minimum/Maximum Stop PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A1 relates to active grille air shutter a position sensor minimum/maximum stop performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A2Active Grille Air Shutter A Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A2 relates to active grille air shutter a control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A3Active Grille Air Shutter A Control Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A3 relates to active grille air shutter a control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A4Active Grille Air Shutter A Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A4 relates to active grille air shutter a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P05A5Active Grille Air Shutter A Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP05A5 relates to active grille air shutter a control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.