What's the matter with the MG 3 automatic gearbox not jumping?

MG 3 has its own gearbox and does not jump gears. In fact, the gearbox is locked. It was the self-inspection of the gearbox that found it was abnormal, and then the owner was not allowed to continue running. You would definitely repair it. Generally speaking, there are many cases of not upshifting, and mechanical failure or hydraulic control unit failure will cause this problem. Click to view the video "MG 3 gearbox fault explanation"

If you don't know anything about MG 3 gearbox, you can ask questions to help you interpret the fault.