What does the definition of a car OBD interface mean?

1 Answers
VanPresley
07/29/25 10:27pm
The definition of a car OBD interface refers to the On-Board Diagnostics system. The On-Board Diagnostics system monitors whether the engine's operating conditions exceed exhaust emission standards and issues a warning if they do. The monitoring scope of the car OBD includes: EGR, engine, particulate filter, catalytic converter, oxygen sensor, emission control system, and fuel system. The functions of the car OBD are: 1. Detecting faults in components and systems to ensure that the vehicle's emissions do not exceed OBD requirements during its service life; 2. When relevant emission faults are detected, the OBD system can use the MIL (Malfunction Indicator Lamp) on the dashboard to alert the driver; 3. Ensuring that faulty vehicles are repaired promptly to reduce emissions; 4. The OBD system aids in diagnostics, enabling targeted repairs.
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