...into reverse & nothing happened? I pressed on the gas really hard & the rpm's go up & the car surges. It did the same thing in drive, I was able to move it to a different parking spot, but needed to have it towed. I have a code of P0491 that has been on for awhile. It came on a couple months ago & had the sensor replaced by the dealer. A couple weeks before that I replaced the camshaft positioner sensor. I don't know where to start, what kinda of shop to take it to. Please help...anyone!