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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 6097–6120 of 7353

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P2B23Hybrid/EV Electronics Coolant Temperature Sensor B Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2B23 relates to hybrid/ev electronics coolant temperature sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B24Hybrid/EV Electronics Coolant Temperature Sensor C CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2B24 relates to hybrid/ev electronics coolant temperature sensor c circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B25Hybrid/EV Electronics Coolant Temperature Sensor C Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2B25 relates to hybrid/ev electronics coolant temperature sensor c circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B26Hybrid/EV Electronics Coolant Temperature Sensor C Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2B26 relates to hybrid/ev electronics coolant temperature sensor c circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B27Hybrid/EV Electronics Coolant Temperature Sensor C Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2B27 relates to hybrid/ev electronics coolant temperature sensor c circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B28Hybrid/EV Battery Pack Coolant Pump A PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2B28 relates to hybrid/ev battery pack coolant pump a performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B29Hybrid/EV Battery Pack Coolant Pump A Overspeed - Dry RunUrgentElectrical & Charging System30–120 minutes for initial diagnosisP2B29 relates to hybrid/ev battery pack coolant pump a overspeed - dry run. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B2AHybrid/EV Electronics Coolant Pump A Overspeed - Dry RunUrgentEngine Problems30–120 minutes for initial diagnosisP2B2A relates to hybrid/ev electronics coolant pump a overspeed - dry run. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B2BEngine Coolant Temperature Sensor 5 CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2B2B relates to engine coolant temperature sensor 5 circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B2CEngine Coolant Temperature Sensor 5 Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2B2C relates to engine coolant temperature sensor 5 circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B2DEngine Coolant Temperature Sensor 5 Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2B2D relates to engine coolant temperature sensor 5 circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B2EEngine Coolant Temperature Sensor 5 Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2B2E relates to engine coolant temperature sensor 5 circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B2FFan 1 Performance/Stuck OffCheck soonEngine Problems30–120 minutes for initial diagnosisP2B2F relates to fan 1 performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B30Fan 1 Stuck OnCheck soonEngine Problems30–120 minutes for initial diagnosisP2B30 relates to fan 1 stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B31Fan 2 Performance/Stuck OffCheck soonEngine Problems30–120 minutes for initial diagnosisP2B31 relates to fan 2 performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B32Fan 2 Stuck OnCheck soonEngine Problems30–120 minutes for initial diagnosisP2B32 relates to fan 2 stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B33A Camshaft Profile Actuator B Control Circuit/Open Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2B33 relates to a camshaft profile actuator b control circuit/open bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B34A Camshaft Profile Actuator B Control Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2B34 relates to a camshaft profile actuator b control circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B35A Camshaft Profile Actuator B Control Circuit High Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2B35 relates to a camshaft profile actuator b control circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B36A Camshaft Profile Actuator B Control Circuit/Open Bank 2Check soonEngine Problems30–120 minutes for initial diagnosisP2B36 relates to a camshaft profile actuator b control circuit/open bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B37A Camshaft Profile Actuator B Control Circuit Low Bank 2Check soonEngine Problems30–120 minutes for initial diagnosisP2B37 relates to a camshaft profile actuator b control circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B38A Camshaft Profile Actuator B Control Circuit High Bank 2Check soonEngine Problems30–120 minutes for initial diagnosisP2B38 relates to a camshaft profile actuator b control circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B39B Camshaft Profile Actuator B Control Circuit/Open Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2B39 relates to b camshaft profile actuator b control circuit/open bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B3AB Camshaft Profile Actuator B Control Circuit Low Bank 1Check soonEngine Problems30–120 minutes for initial diagnosisP2B3A relates to b camshaft profile actuator b control circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.