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_x0009_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. _x0009_Replace your faulty purge valve to clear codes and keep your emissions system sealed. _x0009_* This part is designed for the TSI engine only. This can easily be found on the engine cover of your 2.0T VW/Audi. It will clearly be stamped TSI or TFSI. _x0009_ _x0009_ _x0009_