The primary role of the canister close valve is to regulate the flow of fresh air into the charcoal canister.
: Faulty CCVs often trigger specific OBD-II diagnostic trouble codes, most commonly P0446 (Vent Control Circuit Malfunction). Other related leak codes include P0442 or P0455.
If the canister close valve fails, it can lead to several noticeable issues:
: Find the black plastic charcoal canister held by a metal strap (usually secured by 12mm nuts).