What does OBD mean in cars?
1 Answers
OBD in cars stands for On-Board Diagnostics, which is primarily used to monitor the operating status of the engine and the working condition of the exhaust treatment system in real-time. The systems and components monitored by OBD in real-time include: EGR, engine, particulate filter, catalytic converter, oxygen sensor, emission control system, fuel system, and other related systems and parts. The working principle of OBD is: when an emission fault occurs, the ECU records the fault information and related codes, and notifies the driver by illuminating the fault light or the check engine warning light. Maintenance personnel can quickly locate the fault by reading the fault codes with the vehicle's original factory-specific instrument, facilitating vehicle repairs.