i have a 98 s70 Turbo, and i am getting code P0108 with the check engine light on.

i figured it was the sensor next to the washer resevoir filler tube. i put on another used on that never had a problem in the car which it came from.
the code came back after a week or so.

then i did some research and i read sometimes the air mass meter can cause this code, so again i put a known good used one on and the code came back after a week or so.

any other ideas?

 

This is what I found on this code, hope it helps you
http://www.brickboard.com/AWD/volvo/...igh_input.html