How to repair the self-study value of Baojun 560 air-fuel ratio closed-loop control exceeding the lower limit?

1. First of all, if the engine of Baojun 560 vehicle has too much carbon deposit, the self-learning value of closed-loop control of air-fuel ratio will exceed the lower limit. First, clean up the carbon deposits in the throttle and engine.

2. Secondly, this phenomenon caused by the problem of the oxygen sensor of the vehicle needs to be checked. If there is a problem, a new oxygen sensor needs to be replaced.

3. Finally, there is air leakage in the vehicle air intake system. Check the carbon canister solenoid valve and waste gas valve.