Ok, so I have the P0441 code on as well. I did notice that the last time I pulled into the fuel station that the CEL was on and I had a rush of air flowing into the fuel tank when I took the cap off. What should I be looking for?
I also have P1250 and P0455 on (which are all related to emissions and fue/air metering). I have noticed an air "whooshing" sound in the engine bay but can't seem to find it yet (I think it is under the intake manifold and I am trying to keep from pulling that off). I have checked all of the vacuum lines, etc that I can reach/see, but everything seems to be ok.
Any suggestions I can get would be greatly appreciated.