After a couple of weeks I was able to take the car to a shop and they said that the diagnostic test revealed a P0741 code, indicating a torque converter clutch circuit performance stuck-off.

The very first statement in the P0741 diagnostic trouble code chart says if there are other DTCs, fix them first! This makes sense as engine temperature is one of several key conditions monitored ...

The very first statement in the P0741 diagnostic trouble code chart says if there are other DTCs, fix them first! This makes sense as engine temperature is one of several key conditions monitored ...