So I thought I'd post on this thread to keep the issue compartmentalized. I just got my crossfire running and pulled onto the road, everything fine for a sec. then started having shifting issues. The car went into limp mode as was stuck in 1st gear I believe. It gave an engine code of P0715 turbine/input shaft speed sensor circuit. Having a hard time tracking this issue in the service manual. Really don't want to drive it to a shop like this either. This thread said the plate was the problem but doesn't seem clear if it's a DIY or something a shop needs to do.