A code P0456

What is your question?

A code P0456 a curse on occasion it does seem to happen after I get gas normally I'm able to just plug in the OEM computer and reset the code it resets and it won't come back again for being a month or two but I've noticed that lately could it just be a simple gas cap problem is no leaks no other problems than what I just described

What makes this problem better or worse?

No it doesn't matter whether it's warm or cold

How long has your 2001 Chrysler Town & Country had this problem?

About a month now