Po 411 2003 a4 o-my
 

Anybody know an easy way to check code PO-411 on my 2003 A-4..I found a cracked check valve replaced it light still on all looks good ..read Potential causes Looks like I need to be AUDI tech to find out what's going on ..Know easy way to save a buck and do this myself..The A-4 runs very good but the CHECK ME light is still on ..Maybe the light will burn out..HELP and THANKS..This is new to me is there a cheap scaner I can get to check small stuff so I can stay from the GOT YA guy ..Cheap and Audi ??

Thanks....