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Dreaded Engine Management Light

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by bhavin1986, Jun 4, 2011.

  1. bhavin1986

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    Hi all,

    I'm a regular on the 8L A3 section. My brother in law just bought a 2001 B6 1.8t on Thursday, and whilst driving yesterday the dreaded engine management light came on.

    So I scanned the car for faults and the following code appeared:
    16795 - P0402 - Secondary Air Injection System (B2) - Incorrect flow.

    Now my question is, what does this indicate has the fault? I've removed the fault code for now, with the hope that it doesn't re-appear. But if it does, what are we looking at replacing?

    We're hoping that this is just a coincidence and isn't related to the previous owner!

    Any help would be greatly appreciated.

    Bhav
     
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  3. benjie

    benjie Well-Known Member

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  4. bhavin1986

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    Cheers.
     
  5. murran

    murran Active Member

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    can you hear the pump working on cold starts?

    also check the little vac pipe on the egr valve.
     

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