China Naming Network - Weather knowledge - Great wall motor fault code C 120A8 1
Great wall motor fault code C 120A8 1
There is carbon deposit on the throttle.
In this case, the throttle has carbon deposit, and the throttle opening controlled by ECU is not enough. Just wipe the throttle clean. However, some cars need to be initialized after cleaning the accelerator, so I suggest you go to the 4S shop to clean it.