Replace the gas cap, especially if it is OEM. Over time the white plastic threads swell and get sticky which stops the cap from threading all the way down, making a poor seal at the filler neck. Evap issues are known to sometimes throw SAI codes P1412 & P1415.

 

This was 3 years ago! ....ps ; I just realized I'm a Senior AND a Member!

 

My 1415 came back. Quick look and found this.


When I replaced all the vac hoses last year one of the 90deg rubber bends was too tight. It dried out and cracked.

Be nice if all things we're that easy to fix.

Edit. Just realised I replied to the wrong thread. The forum is doing this thing on my phone where it suggests threads to read. I replied to one of those by mistake. :roll: