PO440 code
awm
05-18-2006, 10:44 AM
Anyone know the cause/fix of the PO440 code for a 2000 Buick Century?
BNaylor
05-18-2006, 11:19 AM
Normally a loose or defective gas cap. It is a large evaporative emissions system leak which can be caused by many things.
Welcome to AF.
Welcome to AF.
awm
05-18-2006, 11:37 AM
Thanks for the quick reply. I will check it when I get home.
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