i have 3 codes , p1237, iac. ok
p0810 voltage siginal clutch position sensor
p1618 lead between trans and computer.
now my question is where to start and what to look for . ive read all posts on these codes but not sure where to start at . anyone got any ideas. also not much problems with the trans as i only had the car a few months.
what i belive caused the cel and message was hot rodding on gravel road.
it is a 2001 xc70 with 180xxx miles , no service records and while checking the fluid in the trans i noticed the vin tag or whatever it is was clean and it had a green sticker that appears to have had a trans replacement just because it looks newer. no transmission problems or services done by last owner. any help would be appericated thanks all.

 

wow lets all not comment at once. thanks for nothing guys , great community