2001 Denali Code P446
1Bradymichael
05-25-2004, 11:39 AM
Anybody out there ever had a code P446 come up? I have a AutoXray scanner and it is telling me it relates to a circuit malfunction in the evaporative emmision control vent system.Maybe related to the charcoal canister? :banghead:
GMCTech
05-26-2004, 05:12 AM
It is a vent valve circuit malfunction.
Not sure where the vent valve is on your truck, but it is usually near the tank or rear of the vehicle.
Check connections first for corrosion, etc. - but I have found that 90% of the time it will need replacing.
Hope this helps.
Not sure where the vent valve is on your truck, but it is usually near the tank or rear of the vehicle.
Check connections first for corrosion, etc. - but I have found that 90% of the time it will need replacing.
Hope this helps.
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