What does OBD on a car mean?
1 Answers
OBD on a car stands for On-Board Diagnostics, a system that continuously monitors the engine's operating conditions to check if the vehicle's emissions exceed the standard. If they do, it will immediately issue a warning. When a fault occurs in the system, the malfunction indicator lamp or check engine warning light will illuminate, and the powertrain control module will store the fault information in memory. Through a specific procedure, the fault code can be read from the PCM. Based on the fault code, maintenance personnel can quickly identify the nature and location of the fault. OBD monitors systems and components such as the engine, catalytic converter, particulate filter, oxygen sensor, emission control system, fuel system, EGR, etc., in real-time.