I have a 2001 v70 t5 and I had my timing belt changed yesterday and today the trans. service required message is on, the dash read out will be marked p when it is in drive, the car was driving like it was in 3rd 0r 4th gear to start,up and down shifts are very hard. Pulled over and turned off car and park to drive now worked but miles later it went to just a dash and no letter at all and all was fine before so the question is -- what sensor could he have unplugged or something that would help me get her back to normal