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p0411 Secondary air injection system

Discussion in 'A6/S6/Allroad forum (C5 Chassis)' started by dogsoldier, Jun 22, 2013.

  1. dogsoldier
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    dogsoldier New Member

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    I have the engine management fault P0411 on my 2001 A6 C5 1.8t

    Done a little research and thinking it might be a perished vacuum hose and may need to replace. Does anyone have any other ideas?

    Cheers
    #1

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