2011 CX-9 225k miles

I get the “AT” warning ligth and I am pulling a Torque Converter problem code on my UBD, and the driving symptoms are clearly consistent with a bad converter. For example, when stopped and the transmission in drive, the transmission does not disengage, rather it wants to “go”. Or when in park and going into drive, it “clunks” into gear with a jerk, sometimes stalling the car.

I took it to a local shop and they said they could not read diagnostic info they needed so I need to go to the dealer (they referenced a “service bullentin” on this). So that is next

My question is on the transmission. The car drives great otherwise and there is no slipping with the transmission. So is there a scenario where only the torque converter is replaced on a car with this much mileage? or would it wise to replace the transmission at the same time?

thanks