2007 Mazda3 Check Eng light on- Code P2404
 

I started my car this morning and the check engine light was on. I took it to an advance auto parts and had it read. The code was P2404. Any thoughts on what exactly could be causing this code? Thanks!

P2404 = evap system leak - the issue is what it says, fuel system leak somewhere. This may be one that can be set by forgetting to not tighten the gas cap.