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p0171 p0174

This is a discussion on p0171 p0174 within the General Help forums, part of the LSx Technical Help Section category; I checked and they say o2 sensor lean bank 1 and 2. All I have done since is put a ...

  1. #1
    lmpounded SandmanWs7's Avatar
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    2007 CTS-V

    p0171 p0174

    I checked and they say o2 sensor lean bank 1 and 2. All I have done since is put a k&n filter in. Package said it was pre oiled so it wasnt me over oiling. Do I need to just take that filter off and clean MAF. Will electrical cleaner work or am I screwed and need a new MAF?

  2. #2
    Member Tman's Avatar
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    2000 WS6

    I would try to reset the codes and clean your MAF. This is some good stuff.


  3. #3
    Senior Member camarojunky74's Avatar
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    Rip99SSA4,74Z28M4,02SSM6

    +1, check for vacuum leaks and or exhaust leaks, since you just installed the filter and are getting this now i would look at the maf and or leak behind the maf to the throttle body, good luck and post what ya find

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