hey guys i got a check engine light and scanned it with my scanner and this comes up p2404 something with the EVAP? i had the same sort of thing on my fathers van and all i did was put grease on the gas cap.

I put grease on the gas cap and the CEL still poped up after being cleared. i have 2 Mazda 3's and so i just swapped the gas caps to see if that would help but no it did not. it looks like the CEL pops up after being cleared every 3-5 start-ups.

if anyone knows more info about this or experienced the same problem could they comment. thanks