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Posts Tagged: P0449 Hyundai Sonata

P0449 Hyundai Sonata

Diagnose and fix P0449 Hyundai Sonata A P0449 Hyundai Sonata is part of the evaporative emissions system. For more information on the EVAP system, see this post. The EVAP system consists of a charcoal canister, purge valve and vent or canister close valve. After filling with gas, the computer commands the purge valve and canister close valve to open. Engine vacuum pulls gas vapors out of the charcoal canister and fresh air enters through the canister close valve (CCV). The computer detects the richened mixture and can tell when the … Read More

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