I have a message generated on my car stating my gas cap isn't tight and a code registers P0445.

Question

I changed the cap, cleared the code, but both the message and the code reappeared a couple of days later. Can this be troubleshot fairly accurately without using dealer diag eq? I'm ok around cars, but need a feel for the complexity.

Answer 1

It could also be caused by pinholes in the gastank gooseneck caused by rust if the filler tube is metal.Which is unlikely being it's a 2011, if it's a hose or poly tube it could be a loose clamp.