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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.

Urgent 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 289–302 of 302

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P2D59Generator B Over TemperatureUrgentElectrical & Charging System30–120 minutes for initial diagnosisP2D59 relates to generator b over temperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D87Fan 1 Control Module Over TemperatureUrgentEngine Problems30–120 minutes for initial diagnosisP2D87 relates to fan 1 control module over temperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D8AFan 2 Control Module Over TemperatureUrgentEngine Problems30–120 minutes for initial diagnosisP2D8A relates to fan 2 control module over temperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DA6Coolant Heater A Over TemperatureUrgentEngine Problems30–120 minutes for initial diagnosisP2DA6 relates to coolant heater a over temperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DF7Coolant Pump E Overspeed/Air in SystemUrgentEngine Problems30–120 minutes for initial diagnosisP2DF7 relates to coolant pump e overspeed/air in system. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E46Hybrid/EV Electronics Coolant Pump B Overspeed - Dry RunUrgentEngine Problems30–120 minutes for initial diagnosisP2E46 relates to hybrid/ev electronics coolant pump b overspeed - dry run. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E48Hybrid/EV Electronics Coolant Pump B OverspeedUrgentEngine Problems30–120 minutes for initial diagnosisP2E48 relates to hybrid/ev electronics coolant pump b overspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E7AHybrid/EV Electronics Coolant Pump C OverspeedUrgentEngine Problems30–120 minutes for initial diagnosisP2E7A relates to hybrid/ev electronics coolant pump c overspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E82Cold Start Engine Coolant Pump OverspeedUrgentEngine Problems30–120 minutes for initial diagnosisP2E82 relates to cold start engine coolant pump overspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2EA9DC/AC Converter A Over TemperatureUrgentSensors & Electronics30–120 minutes for initial diagnosisP2EA9 relates to dc/ac converter a over temperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P2EABActive Radiator Air Flow Control Module A Over TemperatureUrgentSensors & Electronics30–120 minutes for initial diagnosisP2EAB relates to active radiator air flow control module a over temperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P0017Crankshaft Position–Camshaft Position Correlation Bank 1 Sensor BUrgentEngine Problems1–3 hours for initial diagnosisP0017 means Crankshaft Position–Camshaft Position Correlation Bank 1 Sensor B. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0018Crankshaft Position–Camshaft Position Correlation Bank 2 Sensor AUrgentEngine Problems1–3 hours for initial diagnosisP0018 means Crankshaft Position–Camshaft Position Correlation Bank 2 Sensor A. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.P0019Crankshaft Position–Camshaft Position Correlation Bank 2 Sensor BUrgentEngine Problems1–3 hours for initial diagnosisP0019 means Crankshaft Position–Camshaft Position Correlation Bank 2 Sensor B. Learn the likely symptoms, common causes, and a safe diagnostic order before replacing parts.