Hello all. I haven't posted here much but I do check out the forum every now and again. Love the knowledge base here. I had an 00 GTP coupe I had to scrap due to body rott. Replaced it with an 04 GTP that has treated me well so far. Last week I ended up buying another 01 GTP coupe as my girlfriend needed a new car and I loved the now gone 2000. Thrilled to have two cars I really like in the driveway now. As the post title says; I am now getting a p0001 fault code on the 2001. The car needed new gas and brake lines to pass safety. The previous owner had the work done at a garage. He gave me a heads up right before I picked it up that the gas gauge "occasionally" malfunctions: it shows full when it is not. He never mentioned this before and he had the work done at a garage for it to pass safety. Now the code p0001 has shown up. I know it is the FVRC circuit open code. My question is where am I most likely to located the issue? Where is the valve itself? At the fuel pump or under the hood? Iv read damaged wiring is a likely suspect from rodents (it was mostly garage kept) but havent found a promising lead yet. I dont want to make this post too lengthy to discourage the experts out there from reading it. Where do you guys think I should start?

It has crossed my mind that this 2001 seems a little lazy compared by memory of my 2000. It has been almost 2 years that I replaced the 2000 with the 2004 though. Not sure if that 20HP difference should be that noticeable or not. Other than that I have no other symptoms to describe.
Let me know if I'm missing important details.

Thanks in advance to anyone with advice.