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  1. #1
    Registered User Four Rings Fonzie@DipYourCar's Avatar
    Join Date
    Oct 16 2010
    AZ Member #
    65751
    Location
    Coconut Creek

    Fault Code - P2440 - Secondary Air Injection Switching valve stuck open - HELP

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    I just installed test pipes (B8 S4) and expected to get an 02 sensor CEL. Instead i got the CEL, but it was only showing one code - P2440 Secondary Air Injection Switching valve stuck open.

    My main concern is since i got that code - my dyno runs are 30-35whp lower than before.

    Is it because of the test pipes, or is this unrelated?

  2. #2
    Registered Member One Ring
    Join Date
    Jan 21 2008
    AZ Member #
    24367
    My Garage
    91 Alpine White GTi
    Location
    NNJ

    try the b8 s4 forums... this is the fabrication forum....

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