Hi all, I need your help. I have a 2005 crossfire coupe and my "check engine light" won't go off and I can't get it smoged. My mechanic said it was giving out code p0446 which has to do with the vent valve and he's already replaced it and still the check engine light won't turn off. If anybody has any ideas please let me know, my crossfire has been a great car and hasn't given me any major problems but If I can't figure this out then I can't smog it and I'll be forced to sell it and I love my car.