Is it possible P0741 is caused by TCM?

Question

Car runs and shifts great but when you are around 40 to 60 miles an hour,if I try to speed up and the car downshifts (into 3rd I believe) it slams hard into that gear. There have been a few time that I have lost reverse. If battery is disconnected the TCM is reset. When I do this the car shifts perfectly for a while then it starts to shift hard after driving for a while. Is it possible with this error P0741 that the problem is just the TCM?

Answer 1

P0741 Torque convertor clutch circuit stuck off

Yes it can be the ECM. but P0741 would not make you loose reverse or create a hard shift.you can    also have  a internal mechancial condition with the transmission.If you lose reverse at times  and your vehicle downshift hard into gear , it would be 2nd gear. this would be more of a transmission mechanical problem.