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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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Old 05-13-2019, 10:06 PM
u023 u023 is offline
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Emissions P0441 vacuum leak

I'm trying to resolve a stubborn P0441 (Evaporative Emission System Incorrect Purge Flow) CEL in a 2001 E46 330i A/T with 140K miles for an upcoming emission test.

The car has a new purge valve and new gas cap. CEL will come on as part of drive cycle.
Following 3 circuits are not ready: Evaporative System, Secondary Air System, Oxygen Sensor Heater.

I've made a DIY smoke device and see minor amounts of smoke to the right (looking from the front of the car) of the intake. Can someone identify this part of me? Smoke is coming from the areas with the red arrows. Is it part of the cruise control? Any guidance for repair?

The P0441 is the only code thrown.
Oxygen sensors are likely original.

Thank you.
JD in Berkeley California.
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  #2  
Old 05-13-2019, 10:37 PM
u023 u023 is offline
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Never mind. Found plenty of posts on the DISA valve.
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Old 05-14-2019, 10:53 AM
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BimmurBrothor BimmurBrothor is offline
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Originally Posted by u023 View Post
Never mind. Found plenty of posts on the DISA valve.
you've probably got the "o" ring by now and replaced it...wish that was my problem,,,well, maybe not!

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Old 05-14-2019, 12:54 PM
archbid archbid is offline
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As an aside the o2 sensors have a 100k maintenance interval. Would encourage you to change. If you still have issues with readiness there is an ecm update that deals with it
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Old 05-18-2019, 06:01 PM
u023 u023 is offline
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@archbid - Thanks for your advice on the oxygen sensors. Two new front oxygen sensors and a new disa o-ring and the car passed emissions.
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Old 05-18-2019, 07:43 PM
archbid archbid is offline
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Awesome!
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