Maybe the answer is in FAQ, apologies if it is. Engine threw a CEL a few days ago. Had a buddy pull the codes. Error code was emmisions related final words were (very small leak). I had one cat and both O2's replaced a year ago under the 6 year 80K deal warranty. Car runs like new. Any ideas ? Thanks to all.

 

WHAT ENGINE, WHAT CODE? We have no idea with that information.

 

2002 Audi A6 with 3.0 engine. Took it to a dealer. Replaced vacuum evap canister and a few hoses here and there. $437 including $38 disposal fee. Thanks for the reply.