AI4Car

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

Find codes by symptomChoose what you notice to search matching code guides.

Quick browse

Choose a vehicle system

FiltersSeverity · family

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 5881–5904 of 6682

Most searched first
P2C84Cold Start Shift Time Too LongCheck soonTransmission IssuesP2C85Hybrid/EV Battery Voltage External Isolation FaultCheck soonElectrical & Charging SystemP2C86Hybrid/EV Battery Voltage Internal Isolation WarningCheck soonElectrical & Charging SystemP2C87Hybrid/EV Battery Voltage External Isolation WarningCheck soonElectrical & Charging SystemP2C88Hybrid/EV Battery Voltage System Isolation WarningCheck soonElectrical & Charging SystemP2C89Hybrid/EV Battery System Precharge Current Too HighCheck soonElectrical & Charging SystemP2C8AHybrid/EV Battery Interface Control Module A PerformanceCheck soonElectrical & Charging SystemP2C8BHybrid/EV Battery Interface Control Module B PerformanceCheck soonElectrical & Charging SystemP2C8CDC/DC Converter Temperature Sensor D CircuitCheck soonSensors & ElectronicsP2C8DDC/DC Converter Temperature Sensor D Circuit Range/PerformanceCheck soonSensors & ElectronicsP2C8EDC/DC Converter Temperature Sensor D Circuit LowCheck soonSensors & ElectronicsP2C8FDC/DC Converter Temperature Sensor D Circuit HighCheck soonSensors & ElectronicsP2C90Crankcase Ventilation System - Hose A DisconnectedCheck soonSensors & ElectronicsP2C91Crankcase Ventilation System - Hose B DisconnectedCheck soonSensors & ElectronicsP2C92Hybrid/EV Battery Contactor Control Supply Circuit/OpenCheck soonElectrical & Charging SystemP2C93Hybrid/EV Battery Contactor Control Supply Circuit Range/PerformanceCheck soonElectrical & Charging SystemP2C94Hybrid/EV Battery Contactor Control Supply Circuit LowCheck soonElectrical & Charging SystemP2C95Hybrid/EV Battery Contactor Control Supply Circuit HighCheck soonElectrical & Charging SystemP2C96Hybrid/EV Battery Disable Circuit/OpenCheck soonElectrical & Charging SystemP2C97Hybrid/EV Battery Disable Circuit LowCheck soonElectrical & Charging SystemP2C98Hybrid/EV Battery Disable Circuit HighCheck soonElectrical & Charging SystemP2C99Throttle Actuator A Control Exceeded Learning LimitCheck soonSensors & ElectronicsP2C9AThrottle Actuator B Control Exceeded Learning LimitCheck soonSensors & ElectronicsP2C9BCold Start Turbocharger/Supercharger Wastegate Actuator A Range/PerformanceCheck soonSensors & Electronics