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

All systems
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 1657–1680 of 2110

Most searched first
P271APark Pawl Position Sensor A Circuit LowCheck soonSensors & ElectronicsP271BPark Pawl Position Sensor A Circuit HighCheck soonSensors & ElectronicsP271CPark Pawl Position Sensor B Circuit LowCheck soonSensors & ElectronicsP271DPark Pawl Position Sensor B Circuit HighCheck soonSensors & ElectronicsP272CPark Pawl Motor Control CircuitCheck soonSensors & ElectronicsP272DPark Pawl Motor Control Circuit Current Too HighCheck soonSensors & ElectronicsP2745Intermediate Shaft Speed Sensor B CircuitCheck soonSensors & ElectronicsP2746Intermediate Shaft Speed Sensor B Circuit Range/PerformanceCheck soonSensors & ElectronicsP2747Intermediate Shaft Speed Sensor B Circuit No SignalCheck soonSensors & ElectronicsP2748Intermediate Shaft Speed Sensor B Circuit IntermittentCheck soonSensors & ElectronicsP2749Intermediate Shaft Speed Sensor C CircuitCheck soonSensors & ElectronicsP2750Intermediate Shaft Speed Sensor C Circuit Range/PerformanceCheck soonSensors & ElectronicsP2751Intermediate Shaft Speed Sensor C Circuit No SignalCheck soonSensors & ElectronicsP2752Intermediate Shaft Speed Sensor C Circuit IntermittentCheck soonSensors & ElectronicsP2765Input/Turbine Shaft Speed Sensor B CircuitCheck soonSensors & ElectronicsP2766Input/Turbine Shaft Speed Sensor B Circuit Range/PerformanceCheck soonSensors & ElectronicsP2767Input/Turbine Shaft Speed Sensor B Circuit No SignalCheck soonSensors & ElectronicsP2768Input/Turbine Shaft Speed Sensor B Circuit IntermittentCheck soonSensors & ElectronicsP2771Four Wheel Drive (4WD) Low Switch CircuitCheck soonSensors & ElectronicsP2772Four Wheel Drive (4WD) Low Switch Circuit Range/PerformanceCheck soonSensors & ElectronicsP2773Four Wheel Drive (4WD) Low Switch Circuit LowCheck soonSensors & ElectronicsP2774Four Wheel Drive (4WD) Low Switch Circuit HighCheck soonSensors & ElectronicsP2784Input/Turbine Speed Sensor A/B CorrelationCheck soonSensors & ElectronicsP278AKick Down Switch CircuitCheck soonSensors & Electronics