Originally Posted by
greatlooks
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.
I do not think that is altogether true. It CAN be the vent valve but from what I understand, the ECM may be fooled into thinking the valve is not closing by leaks/breaks in particular parts of the EVAP system.
Normally, a gross leak will cause a P0455 but from what I understand, if the leak is not in the TANK or filler neck, but is in one of the EVAP hoses/lines, then an 0446 is the result and the ECM can't tell that it's not really the valve but the hoses/lines such that the ECM thinks the valve is not closing.
A much closer look at the entire EVAP system would probably be a good idea, as opposed to taking the definition of the code too literally.