P2190 returns every two months.
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Cadillac STS Forum - 2005 through 2012 Discussion, P2190 returns every two months. in Past Cadillac Vehicle Discussion; About every two months I get a P2190 code (System Too Rich at Idle Bank 2).Vehicle does not have any ...
  1. #1
    ShDmitry is offline Cadillac Owners Member
    Automobile(s): 2008 STS 3.6DI RWD
    Join Date
    May 2013
    Location
    Haifa,Israel
    Age
    42
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    18

    P2190 returns every two months.

    About every two months I get a P2190 code (System Too Rich at Idle Bank 2).Vehicle does not have any unusual engine performance concern like misfires, hesitation, engine stalling or a reduced engine power. Could it be the cause of the K&N air filter, but why only Bank 2? Or maybe loose intake manifold or injector? I am a mechanic, but I have an American car for the first time and I hardly know how to repair it. Maybe you can advise me what could be the problem?

    P.S.
    I read http://www.cadillacforums.com/forums...de-2190-a.html ,but I have only P2190.

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  3. #2
    EChas3's Avatar
    EChas3 is offline Cadillac Owners Master
    Automobile(s): 2006 STS4 V8 1SG & 2007 STS V8 1SE
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    Cedarburg, WI
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    Re: P2190 returns every two months.

    OEM filters protect your engine better; I'd switch back.

    A bit rich probably won't affect how it runs but can ruin your cats.

  4. #3
    ShDmitry is offline Cadillac Owners Member
    Automobile(s): 2008 STS 3.6DI RWD
    Join Date
    May 2013
    Location
    Haifa,Israel
    Age
    42
    Posts
    18

    Re: P2190 returns every two months.

    You're right, I will install a new OEM filter, and then I will check.

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