Thanks all, I got the P0440 01/02 and 02/02. Got scared! Came here, checked my gas cap and it was loose. No worries now.
puttster

 

Thanks for the followup. It is super useful when people do that. And also congrats.

For posting your followup you get a Gold Star!

 

Weirdly, the same thing happened again. SES light came back on, gas cap was loose, again.
After all these years of ownership to have the same thing happen in back-to back weeks... strange. At least I know what to do.