H3 of the Great Wall

Personal experience has the following situations:

1 Too much carbon deposit in idle motor leads to poor sealing.

2. After long-term use, the idling motor will not recover well.

3 Air leakage in the intake branch pipe.

4 air return pipe or exhaust pipe is damaged and leaks.

The throttle is too dirty and there is too much carbon deposit.

The trip computer has an engine air intake fault.

Solution:

You can clean the throttle and idle motor, and then the computer will remove the fault code and reset it. Problems can usually be solved!