Welp as I was driving engine light came on and my cars Drive went out completely while going about 40 mph. If i were to press of the gas all the engine does is rev up no movement at all pull over turn it off and back on put it in drive and it went not even 30 seconds later it did the same it acts like it's in neutral even though it's drive come to a complete stop and it just doesn't move until I turn it off and turn it back on got it home check the codes and P2784 came out as a input/turbine a/b correlation also threw codes for incorrect gear ratio so I'm wondering how hard of a job is this or does the tranny have to come off to replace the sensor. I have 2010 Challenger R/T Classic I've looked everywhere for the sensor I can't find it.