Just as I was starting vacation - literally as I started the car to get on the road, I got a CEL Emmissions warning. Once I got to destination, I tightened my gas cap and pulled the codes. Codes are P0442 and P0496 Bank 1. Appears to be small emissions leak. Cleared codes and they came back.

Had a similar issue with CEL a couple of weeks ago, but it cleared itself.

What is the typical fix for this issue? I am wondering if gas cap gasket could be deteriorating.

Thanks