Am replacing the relay FI this week. I actually have two brand new Volvo cam sensors in a box that I got off ebay for my 850s a few years back - a two for deal - and they have been sitting in my parts box. Same part number. Like a dumb-butt, I changed the rear cams seals in March and thought about putting a new one on, but didn't. I assume my garage checked codes again, as the only code it has is an upstream O2 sensor. I want to do that when I get an extra 125 bucks too. Also thought about replacing temp sensor pre-emptievly too. I just changes plus, cap rotor etc in March. My garage could not get it to replicate the no-start. Just drove it home and had no issues and the air now works so far!!! Crossing my fingers that it keeps an AC charge all summer!