The purge valve should start clicking as soon as the engine goes into closed loop.

Closed loop is when the front oxygen sensor is in control of the fuel mixture.

Code P1 444 is not for the purge valve!

Code P1 444 is for the purge switch-over valve located UNDER the w/s reservoir.

The part number for the part you NEED to replace is 001-540-86-97.

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