Check engine light came on
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2009-2014 Cadillac CTS-V General Discussion Discussion, Check engine light came on in Cadillac CTS-V Series Forum - 2009-2014; My check engine light came on last night while idling in traffic for a few questions minutes. Carsen is 09 ...
  1. #1
    Chosenone is offline Cadillac Owners Member
    Automobile(s): 09 CTS V
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    Check engine light came on

    My check engine light came on last night while idling in traffic for a few questions minutes. Carsen is 09 with 34,700 miles on it and has Borla dual exhaust and Hennessey CAI. Never have had a problem before and passed all smog testing all the time. What gives? I checked gas cap and that's ok and runninv premium fuel as required. Car is still running strong and not acting weird. Any ideas?

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  3. #2
    MacBuster is offline Cadillac Owners Fanatic
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    Re: Check engine light came on

    Make sure the CAI didn't slip off. Mine did that and caused a check engine light.

  4. #3
    Chosenone is offline Cadillac Owners Member
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    Re: Check engine light came on

    Ok so I had the code ran it came back P0174 Service fuel control system. I bought this car used and the guy before me already installed dual borla exhaust and a Hennessy CAI. I have put about 1,000 miles on the car and never got a check engine light or anything and the car has always ran perfect. I have never noticed a hesitation or bad gas mileage or anything like that. I know if I take the car into my Cadillac dealer that will be the first thing they blame. I doubt it is that since it has ran fine before and not thrown a code. Any advice on what I should do next?

  5. #4
    Cadillac Cust Svc's Avatar
    Cadillac Cust Svc is online now Cadillac Customer Service
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    Re: Check engine light came on

    Chosenone, please let me know if do decide to bring your V in to your dealer and if you would like Customer Service to step in and contact your dealer for you to follow up on your behalf. I'm reachable via email at Katie_Lucille@gmexpert.com!

    Best,

    Katie
    Cadillac Customer Service

  6. #5
    wait4me's Avatar
    wait4me is offline Cadillac Owners Connoisseur
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    Re: Check engine light came on

    Probably just a dirty mass air meter. Get some mass air meter cleaner, and clean the sensor real good. also make sure your filter is clean.

  7. #6
    Chosenone is offline Cadillac Owners Member
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    Re: Check engine light came on

    Ok so I didnt install the CAI. Is the mass air flow sensor inside of the CAI? If this is the problem will the check engine light reset itself after I clean these. The thing I dont get is the car is running fine, no hesitation or stuttering, it hauls ass and I am getting 15 miles to the gallon.

  8. #7
    Double e is offline Cadillac Owners Member
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    Re: Check engine light came on

    Find a friendly parts store that will reset code for you to see if it returns, or locate someone with a reset tool.
    Hell, the dealer might reset it for you for nothing if you suggest the CAI had come loose and you secured it back. I doubt the dealer wil blame the added parts right away without looking into it and the possible triggers to that code.

  9. #8
    thebigjimsho's Avatar
    thebigjimsho is offline Cadillac Owners 10000+ Posts
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    If you have an Android phone and the ELM327 Bluetooth dongle, you can read error messages yourself and erase the codes, too.

    I did that on my Town Car. Works great...

  10. #9
    Chosenone is offline Cadillac Owners Member
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    Re: Check engine light came on

    Stopped by Autoparts store today and had the code cleared. Then stopped by an autogarage here that is reputable with Cadillacs and they advised a fuel additive/Fuel Injector cleaner first and then to clean the MAF. Drive the car and see if that keeps the code from creeping back.

  11. #10
    InnovaDiagnostics is offline Cadillac Owners Member
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    Re: Check engine light came on

    Please keep in mind that with all Innova tools you gain access to Repair Solutions. If you know somebody that owns one or our tools or looking into purchasing a diagnostic tool please give us a visit at innova.com. With all of our diagnostic tools we provide "Verified Fixes" which will provide to you what part needs to be changed, the cost of changing the part and also a video of how to proceed with replacing the part.

    I hope the code doesn't come back on your CTS but if it does I hope that our method can be a choice for you.

  12. #11
    baabootoo's Avatar
    baabootoo is offline Cadillac Owners Connoisseur
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    Re: Check engine light came on

    Maybe try a different brand of gas also.

  13. #12
    Ted007's Avatar
    Ted007 is offline Cadillac Owners Member
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    Re: Check engine light came on

    my check engine light came on and stayed on for two days, the day I took it to the dealer, the light had gone out, however the dealer"s service dept said the code was from the oxygen sensor, and did not want to replace it before fully checking the car for any leaks. This was Saturday, and all the mechanics were not available, so, I left the car with them so that their best mechanics could check it out on Monday. I will pick it up on Wednesday. It is a 2012 V and only 974 Miles, only 856 miles when the check engine light came on. I am curious as to what the truly caused the check engine light to come on

  14. #13
    USAFRET is offline Cadillac Owners Fanatic
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    Re: Check engine light came on

    I just had a CEL fixed by my dealer on my 2011 V with 4800 miles on the clock last week. The receipt says something about Service Fuel System and an o2 sensor on the #1 bank was replaced. I didn't pull a code and the deale didn't record the code either. My dealer had me in and out in 3 hours.

    Good luck.

  15. #14
    Chosenone is offline Cadillac Owners Member
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    Re: Check engine light came on

    Well its been 2 weeks and the check engine light hasnt come back on. The only thing I did was have the light reset by O'Rielys Autoparts then cleaned the MAF with some spray and ran some seafoam car cleaner through. Still keeping my fingers crossed.

  16. #15
    Ted007's Avatar
    Ted007 is offline Cadillac Owners Member
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    Re: Check engine light came on

    The dealer's service department called me today to inform me they have repaired my car. They did find a leak and had to tighten where one of the headers connected. I had also noticed that my gas mileage had went from an average of 12 miles per gal to 11.7 miles per gal. I think this to was an indication of a leak. WIth all the tuning required of the engines of these cars I got to try harder to pay more attention to all the details of everything associated with the engine. I want pick the car up until Wednesday, due to the distance from my home to the dealer. I will post here if I have problems with the car after picking it up.

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