Having problems with your 2002 Buick Century ?

Code PO446 - Evaporative Emission System Vent Control Circuit, what that means and how to repair it.

Posted / edited by AnonymousUser on : 19-02-2018

Answers :

The evap canister has a valve on it check the pigtail on the valve and make sure its plugged in good . there is a fuse for it as well . if the fuse is good and the plug is tight . replace valve . Its common for these to go bad .
Repair Help & Product Troubleshooting for 2002 Buick Century

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