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camerontech, diagnostic auto tech
Category: VW
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Experience:  diagnostic auto tech
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1998 VW New Beattle 2.0l trouble code PO440

Customer Question

1998 VW New Beattle 2.0l trouble code PO440
Submitted: 1 year ago.
Category: VW
Expert:  camerontech replied 1 year ago.

hi there,

im cam, a licenced diagnistic tech.

these purge valve are a duty cyle solenoid and can become sticky and intermittent. if they do not fully open or fully close, this will turn the light on.

you can test the valve and it will pass, than put it through some duty cycle tests and it can stick open or closed.

The only way to properly ceck this is with a smoke machine and working the purge valve .

if it is an intermittent issue, its probably a good idea to replace this valve as i find it has been the culprit 90% of the time.

Expert:  camerontech replied 1 year ago.

hi there

how did your repair go?

please dont forget to rate me! as it is important for my page

thanks and if you still need assistance , let me know!


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