What are the OBD inspection items for annual vehicle inspection?
1 Answers
Annual OBD inspection items are as follows: 1. Check whether there are fault codes in the engine system; 2. Check the incomplete items of the engine system regarding readiness status. Vehicle OBD is an on-board automatic diagnosis system, and its functions are: 1. Locate and describe the fault for the faulty part or component to facilitate maintenance; 2. Alarm for faults that cause excessive emissions to prompt the increase of environmental impact caused by pollutant emissions. The working principle of OBD: When an emission fault occurs, the ECU records the fault information and related codes, and informs the driver through the fault light or the check engine light.