Diagnostic library

Find an OBD2 code

Search the code from your scanner, then narrow the library by system, severity, or code family.

9,253 diagnostic guides

Sort

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.

P · Powertrain Clear all

Quick browse

Choose a vehicle system

Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

FiltersSeverity · family

Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

Vehicle coverage

These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 6457–6480 of 7353

Most searched first

P2C8BHybrid/EV Battery Interface Control Module B PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C8B relates to hybrid/ev battery interface control module b performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C8CDC/DC Converter Temperature Sensor D CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C8C relates to dc/dc converter temperature sensor d circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C8DDC/DC Converter Temperature Sensor D Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C8D relates to dc/dc converter temperature sensor d circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C8EDC/DC Converter Temperature Sensor D Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C8E relates to dc/dc converter temperature sensor d circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C8FDC/DC Converter Temperature Sensor D Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C8F relates to dc/dc converter temperature sensor d circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C90Crankcase Ventilation System - Hose A DisconnectedCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C90 relates to crankcase ventilation system - hose a disconnected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C91Crankcase Ventilation System - Hose B DisconnectedCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C91 relates to crankcase ventilation system - hose b disconnected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C92Hybrid/EV Battery Contactor Control Supply Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C92 relates to hybrid/ev battery contactor control supply circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C93Hybrid/EV Battery Contactor Control Supply Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C93 relates to hybrid/ev battery contactor control supply circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C94Hybrid/EV Battery Contactor Control Supply Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C94 relates to hybrid/ev battery contactor control supply circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C95Hybrid/EV Battery Contactor Control Supply Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C95 relates to hybrid/ev battery contactor control supply circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C96Hybrid/EV Battery Disable Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C96 relates to hybrid/ev battery disable circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C97Hybrid/EV Battery Disable Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C97 relates to hybrid/ev battery disable circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C98Hybrid/EV Battery Disable Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2C98 relates to hybrid/ev battery disable circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C99Throttle Actuator A Control Exceeded Learning LimitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C99 relates to throttle actuator a control exceeded learning limit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C9AThrottle Actuator B Control Exceeded Learning LimitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C9A relates to throttle actuator b control exceeded learning limit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C9BCold Start Turbocharger/Supercharger Wastegate Actuator A Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C9B relates to cold start turbocharger/supercharger wastegate actuator a range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C9CCold Start Turbocharger/Supercharger Wastegate Actuator B Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C9C relates to cold start turbocharger/supercharger wastegate actuator b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C9DFuel Pressure Regulator C Exceeded Control Limits - Pressure Too HighCheck soonFuel System30–120 minutes for initial diagnosisP2C9D relates to fuel pressure regulator c exceeded control limits - pressure too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C9EFuel Pressure Regulator C Exceeded Control Limits - Pressure Too LowCheck soonFuel System30–120 minutes for initial diagnosisP2C9E relates to fuel pressure regulator c exceeded control limits - pressure too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C9FFuel Pressure Regulator D Exceeded Control Limits - Pressure Too HighCheck soonFuel System30–120 minutes for initial diagnosisP2C9F relates to fuel pressure regulator d exceeded control limits - pressure too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CA0Fuel Pressure Regulator D Exceeded Control Limits - Pressure Too LowCheck soonFuel System30–120 minutes for initial diagnosisP2CA0 relates to fuel pressure regulator d exceeded control limits - pressure too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CA1Charge Air Cooler Coolant Pump Sense Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2CA1 relates to charge air cooler coolant pump sense circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CA2Charge Air Cooler Coolant Pump Sense Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2CA2 relates to charge air cooler coolant pump sense circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.