Was throwing limbs on my burn pile the other day with grapple bucket, went in to dump limbs and used shuttle to back out but didn't move. Had to use bucket to back out of flames, a little hairy but no damage to anything but shuttle showed code 48. Turn tractor off and then back on and no code, worked the rest of the day no problems. Jumped on today fired her up and code 48 blinking and will not move at all, tried restarting a couple of times, can hear a switch cycling when ignition is in the on position, already replaced the pressure switch that everyone says goes out on these about 2 years ago, is it the same switch or is this a different problem?