P0456 2003 Ford F150 -

Question

The video i watched dealt with newer vehicles, what could be the cause of P0456 on my Expedition?

Answer 1

Hi there,

This code is for a small evap leak. This is a very small leak that usually cannot be seen with the naked eye. Typically a smoke test is done on the system to locate the leak and resolve the problem. The very first thing to look at with these is the gas cap