Got a CEL P0456

[EricG]

Started the redeye this morning and it flashed a CEL, just got a chance to check it and it's P0456 with EVAP system, small leak detected. Hoping the gas cap just needs to be re-screwed back on, maybe I didn't get it tight/right the last time I filled up? Anyone else ever encounter this and have an easy fix?

 

[EricG]

Well…in case anyone is wondering…I took off the gas cap, re-tightened it and did a few drive cycles and the CEL turned off. Yippie!

 

[BULL]

Check for debris on the cap?

 

[EricG]

Check for debris on the cap?

Yeah it was all good, I think I was just in a rush last time I filled up and didn't screw it on straight and secure. Going to get gas again later this morning, will see if the issue returns or not...

 

[2ndAmend]

I'd buy a new cap, cheap insurance. Keep the old one.