As the title states, my CEL has been coming on quite frequently lately. It started last week I saw my gas cap light was on and I know for a fact I always make sure to tighten my gas cap all the way, and on the TSI's the cap doesnt click it just stops, so I thought that was a little strange but I got out and checked it and it was fine. The next time I started my car it went off and I was good for a couple days, then the CEL came on so I'm like wtf? I thought something was seriously wrong, but I was boosting normal so I knew it couldnt be that. Then I took it to the dealer where I work and scanned it with the dealer scan tool and came up with 3 codes. Evap leak, major leak, and one other I cant remember. So I just cleared the codes and I was fine for a couple days and now the same sequence of events happend again. I think it may have something to do with temp, because we've been having 60* days and 20* nights but idk. I only work on the weekends so does anybody have some insite as to what it may be until I can get it looked at?