Mazda Xingcheng reports pcm communication leakage fault of absic instrument.

1, too much carbon deposit in the intake system and intake valve roots, resulting in too lean mixture concentration during cold start. The air intake system needs to be cleaned.

2. The throttle is dirty and the air intake is insufficient. Need to clean the throttle.

3. The speed of the starter can't meet the requirements. Need to increase the speed of the starter.