Jul 06, 2006 · That could be caused by a stuck open purge valve, a sticking closed canister close valve, or any restriction in the system, including liquid fuel in the evaporative lines or canister. You've got plenty of warranty left. The Hyundai Sonata costs $247 on average to maintain annually. Oil changes may be the most frequent service every car needs, but the following services ... Hyundai Sonata Repair & Maintenance Estimates. Over 600,000 car repair estimates provided since 2012.
Canister Close Valve (CCV) is normally open and is installed on the canister ventilation line. It seals evaporative emission control system by shutting the canister from the atmosphere during EVAP leak detection process. Fuel Pressure Control Valve.
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