I was thinking about this. I remember reading that if you put non emission legal items on your car that it throws a code in the pcm for an automatic tranny. It seems like chrysler put that there to tell if you are modifying your car. Not too sure what exactly you had done since I'm just getting back into fwd turbo cars, my last being a glh, i do know if you have a "buddy" at a dealership they can clear the code and your good to go. Like I said not sure if this relates to your situation or not.