I just went through a terrible scare with my transmission with numerous bad codes and failsafe.
It dawned on me that I sprayed my car clean while the E box cover was off and probably got the TCM wet.
Opened it up and yikes.
Cleaned it up and put it back together and transmission is working perfectly again. Maybe you can borrow a TCM or buy cheap on eBay I don't know if TCM like the DME needs to be coded to the car.