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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.

Engine Problems 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 697–720 of 1049

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P2B74Coolant Heater A Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2B74 relates to coolant heater a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B75Coolant Heater A Control Circuit PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2B75 relates to coolant heater a control circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B76Coolant Heater B Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP2B76 relates to coolant heater b control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B77Coolant Heater B Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2B77 relates to coolant heater b control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B78Coolant Heater B Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2B78 relates to coolant heater b control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B79Coolant Heater B Control Circuit PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2B79 relates to coolant heater b control circuit performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B83Charge Air Cooler Coolant Pump A Overspeed/Air In SystemUrgentEngine Problems30–120 minutes for initial diagnosisP2B83 relates to charge air cooler coolant pump a overspeed/air in system. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B84Charge Air Cooler Coolant Pump A UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP2B84 relates to charge air cooler coolant pump a underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B85Engine Coolant Pump UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP2B85 relates to engine coolant pump underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B86Coolant Pump A Overspeed/Air in SystemUrgentEngine Problems30–120 minutes for initial diagnosisP2B86 relates to coolant pump a overspeed/air in system. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B87Coolant Pump A UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP2B87 relates to coolant pump a underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B9CCoolant Pump A Stuck/StalledCheck soonEngine Problems30–120 minutes for initial diagnosisP2B9C relates to coolant pump a stuck/stalled. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B9ECoolant Pump A Control Module OvertemperatureCheck soonEngine Problems30–120 minutes for initial diagnosisP2B9E relates to coolant pump a control module overtemperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P2B9FCoolant Pump B UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP2B9F relates to coolant pump b underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BA0Coolant Pump C UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP2BA0 relates to coolant pump c underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BA1Coolant Pump D UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP2BA1 relates to coolant pump d underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BA2Engine Coolant Pump Stuck/StalledCheck soonEngine Problems30–120 minutes for initial diagnosisP2BA2 relates to engine coolant pump stuck/stalled. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB4Engine Coolant Temperature Sensor 4 Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP2BB4 relates to engine coolant temperature sensor 4 circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB5Engine Coolant Temperature Sensor 5 Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP2BB5 relates to engine coolant temperature sensor 5 circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB6Engine Coolant Temperature Sensor 6 CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP2BB6 relates to engine coolant temperature sensor 6 circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB7Engine Coolant Temperature Sensor 6 Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2BB7 relates to engine coolant temperature sensor 6 circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB8Engine Coolant Temperature Sensor 6 Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2BB8 relates to engine coolant temperature sensor 6 circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BB9Engine Coolant Temperature Sensor 6 Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2BB9 relates to engine coolant temperature sensor 6 circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2BBAEngine Coolant Temperature Sensor 6 Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP2BBA relates to engine coolant temperature sensor 6 circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.