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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.

Sensors & Electronics P · Powertrain Clear all

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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 409–432 of 2110

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P053BPCV Heater A Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP053B relates to pcv heater a control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P053CPCV Heater A Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP053C relates to pcv heater a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P053DPCV Heater A PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP053D relates to pcv heater a performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P053ECrankcase Pressure Too HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP053E relates to crankcase pressure too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0550Power Steering Pressure Sensor Circuit MalfunctionUrgentSensors & Electronics30–120 minutes for initial diagnosisP0550 indicates a fault related to power steering pressure sensor circuit malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0551Power Steering Pressure Sensor Circuit Range/PerformanceUrgentSensors & Electronics30–120 minutes for initial diagnosisP0551 indicates a fault related to power steering pressure sensor circuit range/performance. Learn the likely causes and a practical diagnostic order before replacing parts.P0552Power Steering Pressure Sensor Circuit Low InputUrgentSensors & Electronics30–120 minutes for initial diagnosisP0552 indicates a fault related to power steering pressure sensor circuit low input. Learn the likely causes and a practical diagnostic order before replacing parts.P0553Power Steering Pressure Sensor Circuit High InputUrgentSensors & Electronics30–120 minutes for initial diagnosisP0553 indicates a fault related to power steering pressure sensor circuit high input. Learn the likely causes and a practical diagnostic order before replacing parts.P0554Power Steering Pressure Sensor Circuit IntermittentUrgentSensors & Electronics30–120 minutes for initial diagnosisP0554 indicates a fault related to power steering pressure sensor circuit intermittent. Learn the likely causes and a practical diagnostic order before replacing parts.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.P0564Cruise Control Multi-Function Input A CircuitLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0564 indicates a fault related to cruise control multi-function input a circuit. Learn the likely causes and a practical diagnostic order before replacing parts.P0565Cruise Control On Signal MalfunctionLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0565 indicates a fault related to cruise control on signal malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0566Cruise Control Off Signal MalfunctionLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0566 indicates a fault related to cruise control off signal malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0567Cruise Control Resume Signal MalfunctionLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0567 indicates a fault related to cruise control resume signal malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0568Cruise Control Set Signal MalfunctionLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0568 indicates a fault related to cruise control set signal malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P0569Cruise Control Coast Signal MalfunctionLow prioritySensors & Electronics30–120 minutes for initial diagnosisP0569 indicates a fault related to cruise control coast signal malfunction. Learn the likely causes and a practical diagnostic order before replacing parts.P056ACruise Control Increase Distance SignalLow prioritySensors & Electronics30–120 minutes for initial diagnosisP056A relates to cruise control increase distance signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P056BCruise Control Decrease Distance SignalLow prioritySensors & Electronics30–120 minutes for initial diagnosisP056B relates to cruise control decrease distance signal. Check the fault conditions and vehicle-specific procedure before replacing parts.P056CCruise Control Cancel SignalLow prioritySensors & Electronics30–120 minutes for initial diagnosisP056C relates to cruise control cancel signal. 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.