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Amedee, Former ASE Master Tech
Category: Car
Satisfied Customers: 26441
Experience:  ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector
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My mazda 3 is getting a u0101 error communication with transmission.

Resolved Question:

My mazda 3 is getting a u0101 error communication with transmission. The mazda 3 has Transmission control module is seperate from the transmission. The dealer is telling me I need a new transmission but there are people on the mazda forums who have replaced the TCM and been fine. Need a suggestion
Submitted: 6 years ago.
Category: Car
Expert:  Amedee replied 6 years ago.

It sounds like you just have a bad TCM. This is in fact very common on this vehicle. This is going to be a electrical issue.. not a mechanical issue. A bad transmission will not prevent communication with the TCM.
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