Scanned with OBD II P0717 shows up, I did some research on it. It says it could be my speed sensor gone bad, or it could be wire shortage between Tranny and PCM. I checked 20 pin wire harness that's located on top of transmission, its fine even the wiring from tranny to pcm is fine. I wonder where the tranny speed sensor is located is it easy to replace what else "I LOOK FOR IN RELATED TO SOLVE THE MYSTERY OF P0717" Please any help/advice/ suggestions will be appreciated before I take it to mechanic who might RIP my pocket/wallet OFF. I'd rather pull my hairs out to solve this mystery of P0717 in my backyard. THANKS FOR THOSE WHO WILL GIVE A WORD OF HELP!