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The purge valve is ECU-controlled and opens to purge fuel vapors from the charcoal canister into the running engine for burning. The valve also serves a diagnostic purpose, as it remains closed during onboard tests that check for fuel vapor leaks to the atmosphere. A failed purge valve can cause engine performance problems and store diagnostic trouble codes, commonly P0441.
Replace your faulty purge valve to clear codes and keep your emissions system sealed.
