so i researched the problem some more and it seems that pressurizing the system would be the easiest way to find the leak. Seeing as I don't have that kind of equipment, I called a shop and they quoted $168 for that work alone. Now, if that's going to help solve the problem, I'm willing to pay it, but can someone tell me if that seems kind of high or not?
I just fixed this code on my car. I first ordered a new gas cap from IPD, that didnt fix the light. I then did a lot of searching, and discovered the " J HOSE ". It is a royal pain in the a%$ to fix. On the P2 cars, you have to drop the exhaust to get at this hose, that runs off the charcoal canister by the gas tank. It is a $23 part from ipd, or FCP, but requires a good 1.5-2 hours of work. Search J Hose volvo, and you will get lots of hits.