Why would my gas cap keep throwing codes replaced cap sill throwing cie

Some vehicles evaporative emissions systems are very unforgiving when it comes to replacement parts, so if you've installed an aftermarket component from your local parts store, the new part could be the issue. The air pump may be a separate issue, with more detail I could provide more information. If you have any other questions or would like to discuss things further, feel free to give us a call at (877) 913-1554 Dusty