A database of OBD-II fault codes with descriptions. Enter a code or keyword — P0420, EGR, lambda sensor, U0100.
The first letter of the code marks the vehicle system where the fault is registered. The code color in search results matches the category color.
Engine, transmission, lambda sensors, EGR, DPF, AdBlue, injection. The largest group of codes.
Airbag, SRS, climate, lighting, wipers, central locking, immobilizer.
ABS, ESP, active suspension, steering, wheel and brake-system sensors.
Messaging between units: CAN-bus, LIN, FlexRay. Most often — loss of communication with a module.