What is the reason for no communication with the transmission control unit?

1 Answers
StJade
07/24/25 2:30am
Transmission control unit no communication fault root cause is that other control units lose communication with the transmission control unit during vehicle operation. Below are the relevant explanations: Possible causes of the fault: Possible causes of the fault include: power supply, grounding, wiring faults of the transmission mechatronic control unit, or the transmission mechatronic control unit itself being faulty. Areas that need to be checked: It is necessary to conduct step-by-step inspection, testing, and judgment from the outside to the inside, from mechanical to electrical, and from software to hardware, checking the power supply fuse, reading gateway data to see if there is communication, conducting routine wiring checks, and checking the transmission control unit itself for faults.
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