[DrCoolbeans]

Hey, sorry if this is a repost, but I did a quick forum search and couldn't find anything so here it is:

So, my car is throwing the dreaded P0455 code. I recently bought it with the code already on it. I started by re-tightening the gas cap and clearing the code. Came back on a bit later. I took it to my local mechanic and had them perform a smoke test. Well, they found no such leak. The guy re-tightened the gas cap himself, cleared the code and sent me on my way to see if he fixed it.

Well, guess what has come right back? Before I take it back, does anyone have any idea what I may be looking at? I've got to get it reinspected by Dec 5th, as my 60 day "R" will be up.

Thanks!