code P0449, check engine light on a 2009 Chev. Treverse

Question

Is there a wiring diagram for this code. Most common problems with this code

Answer 1

Hi there,

This code is pretty straight forward. It means there is a problem with the vent control valve on the emissions system. The most common cause of this code is the valve itself. They usually seize up and don't function properly. This sets off the code because there isn't any change when the car does it's self test.