My check engine light comes on an goes off periodically. The code is P0722 (output speed sensor). I'm told if the sensor fails, it is integrated with the transmission control module, and the only fix is to replace the transmission control module. With this light on and stored data, I can't pass the emissions test. I'm told that I should expect to pay $2000 for labor and $800 - $1000 in parts. The module is located inside the transmission.
The transmission shifts perfectly and their are no other issues with the car. Does anyone have any idea how to minimize the costs to fix this? This one hurts.
Thanks for the response. Just so I'm clear. On a 2005 Audi A4 Cabriolet the TCM is located in the transmission and the speed sensor is in the module, correct? You reference it being at the base of the windshield, and that's the first I've heard of that.