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2008-2013 Cadillac CTS General Discussion Discussion, problem in Cadillac CTS Second Generation Forum - 2008-2013; hi guys, check engine was on a month ago went to the dealer and we changed the pass side catalytic ...
  1. #1
    avi1777 is offline Cadillac Owners Member
    Automobile(s): 2009 cts
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    problem

    hi guys,
    check engine was on a month ago went to the dealer and we changed the pass side catalytic converter.
    light still comes on error no-p0430-00
    it says cc low efficiency bank 2.
    bank 2 is the pass side right?
    what else can it be?
    tnx

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  3. #2
    Cadillac Cust Svc's Avatar
    Cadillac Cust Svc is online now Cadillac Customer Service
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    Re: problem

    Hi avi1777,

    I am sorry to hear the check engine light still comes on your vehicle after your recent repair. Have you had the chance to speak with your dealership about this yet? If you would like us to contact your dealer on your behalf, and assist throughout the process of working with them again, please let us know. We can be reached via private message to further discuss your situation and are more than happy to help anyway that we can.

    Regards,

    Laura M.
    Cadillac Customer Care
    avi1777 likes this.

  4. #3
    halister is offline Cadillac Owners Member
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    Just happened to come across this while waiting for my buddy at kyser cadillac. He said 70% of the time that code will be the catalytic convert.
    He also said it could like 6 other things.
    avi1777 likes this.

  5. #4
    avi1777 is offline Cadillac Owners Member
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    Re: problem

    the thing is i replaced the faulty converter but it still says its faulty...
    (i bought a new one from the dealership.)

  6. #5
    halister is offline Cadillac Owners Member
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    Let's arrow it down a bit.
    Is it running fine?
    Idle good?
    No hesitation?
    If that is all yes could be the PCM.

    If not start cleaning fuel injectors, replace wires etc...will get it just have to run Down through it. Pretty generic code.

  7. #6
    avi1777 is offline Cadillac Owners Member
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    Re: problem

    all good drives normal.last week i did this thing where u put bg straight into the intake manifold,forgot what its called.

    ----------

    it consume a bit more gas also

  8. #7
    tinman's Avatar
    tinman is online now Cadillac Owners Connoisseur
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    Re: problem

    O2 sensor?

  9. #8
    halister is offline Cadillac Owners Member
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    Don't use that garbage. Sea foam would have been better.
    Is that the only code?

    ----------

    Yeah replace the sensor. Hopefully one of 2 things. Fixes it or spits out a another code.

  10. #9
    calif phil is offline Cadillac Owners Fanatic
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    Re: problem

    BG is not garbage. You have it backwards.

  11. #10
    avi1777 is offline Cadillac Owners Member
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    Re: problem

    yes thats the only code,
    can this code mean 2 different things?
    it says catalytic converter.

  12. #11
    tinman's Avatar
    tinman is online now Cadillac Owners Connoisseur
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    Re: problem

    What engine do you have? How many miles?

  13. #12
    avi1777 is offline Cadillac Owners Member
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    Re: problem

    3.6 di with 60.000 miles

  14. #13
    Hammerhead100's Avatar
    Hammerhead100 is offline Cadillac Owners Fanatic
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    Re: problem

    P0430 - OBD-II Trouble Code

    Catalyst Efficiency Below Threshold (Bank 2)

    OBD II Fault Code
    OBD II P0430

    Fault Code Definition
    The Bank 2 Catalytic Converter's emissions reducing efficiency has fallen below the minimum allowable threshold. This efficiency is tracked by a monitoring Oxygen Sensor that is mounted near the outlet of the Catalytic Converter.

    Symptoms
    • Check Engine Light will illuminate
    • In many cases, no abnormal symptoms may be noticed
    • In some cases, there may be a noticeable lack of engine power

    Common Problems That Trigger the P0430 Code
    • Defective Catalytic Converter
    • Internal engine damage resulting in high oil consumption and/or a leaking Head Gasket has damaged the Catalytic Converter

    Common Misdiagnoses
    • Oxygen Sensor(s) are replaced when the real problem is a damaged Catalyst
    • Catalyst is replaced when the real problem is internal engine damage, which is producing elevated emissions levels
    • Catalyst is replaced when a misfiring engine is the real problem

  15. #14
    avi1777 is offline Cadillac Owners Member
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    Re: problem

    no lack of power and i changed the cat,
    maybe its the Oxygen Sensor after all?
    tnx

  16. #15
    halister is offline Cadillac Owners Member
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    I assumed you already did replace the o2 sensor. Sorry

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