I just bought a 2004 S60 2.5t with 118000 miles a week ago the guy told me the gas cap was very touchy, he told me if there were any problem to take it back. Well i have a third party run the OBD test and told me there were two codes
P2401
P0448

I know the second one is the gas cap I'm going to see next time I fill it if it will go away, what I'm wondering is about the P2401 and how do i fix it?