Did i mess my car up? Need your guys info!
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Cadillac STS-V Series Forum Discussion, Did i mess my car up? Need your guys info! in Cadillac V-Series Forums; Got my car tuned by jesse and it was running great then the dtc code po172&po175 popped up, got a ...
  1. #1
    Psycho-albanian is offline Cadillac Owners Fanatic
    Automobile(s): STS_V
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    Did i mess my car up? Need your guys info!

    Got my car tuned by jesse and it was running great then the dtc code po172&po175 popped up, got a new maf sensor new 02 sensors and still running rich.So i bought a new coolant sensor and took out the old one and try to put the new one in but the new senor does not fit. I put the old sensor back in and now i got po135 code and i can't clear it what should i do.

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  3. #2
    TimmyC is online now Cadillac Owners Connoisseur
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    Re: Did i mess my car up? Need your guys info!

    Sounds like the right side (Passenger) O2 is bad. The other codes might be from your intake coming loose somewhere, although that usually results in lean codes. Maybe Jesse put the wrong MAF curve in there.

    Edit: p0135 is an O2 code. P0315 is crank sensor position learn code. The sensor might be going bad.

  4. #3
    Psycho-albanian is offline Cadillac Owners Fanatic
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    Re: Did i mess my car up? Need your guys info!

    He might have. That po315 code has me worried cause i can't clear it with my scanner and that code comes up as crank code.

  5. #4
    PGA2B's Avatar
    PGA2B is offline Cadillac Owners Connoisseur
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    Re: Did i mess my car up? Need your guys info!

    Also look over where you were changing the sensor and make sure you didn't knock off another harness from the crank sensor.

    Tim- pretty sure it was dyno tuned... He should of had issues on the way home if the wrong MAF adjustments were made.

    You could always swap O2's and see if the issue follows the suspect sensor.

    Another reason I am really glad I have HP Tuner to see what is going on with the scanner.

  6. #5
    torched10's Avatar
    torched10 is offline Cadillac Owners Fanatic
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    Re: Did i mess my car up? Need your guys info!

    this is your expert guy??

  7. #6
    TimmyC is online now Cadillac Owners Connoisseur
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    Re: Did i mess my car up? Need your guys info!

    Quote Originally Posted by PGA2B View Post
    Also look over where you were changing the sensor and make sure you didn't knock off another harness from the crank sensor.

    Tim- pretty sure it was dyno tuned... He should of had issues on the way home if the wrong MAF adjustments were made.

    You could always swap O2's and see if the issue follows the suspect sensor.

    Another reason I am really glad I have HP Tuner to see what is going on with the scanner.
    True, it should not have taken this long. He put the wrong code in the first post. p0135 instead of p0315. That's why I thought O2 sensor.

  8. #7
    PGA2B's Avatar
    PGA2B is offline Cadillac Owners Connoisseur
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    Re: Did i mess my car up? Need your guys info!

    Then I would look over where I was to see what I bumped or knocked off.

    Can't imagine that a leaking intake would cause a rich code though. Usually it causes a lean code. Maybe check for an exhaust leak too. But for me if I changed out a sensor and get a new code I am going to look over what I did to make sure I didn't knock off something else.

  9. #8
    kbf250 is offline Cadillac Owners Member
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    Re: Did i mess my car up? Need your guys info!

    Is your ECM a new one? Usually PO315 is associated with installing a new ECM. It happened with my car
    and The only way I could clear it was by going to the dealer and have them perform a Crankshaft Variation
    Relearn. Unfortunately you need Tech 2 software to do this. Also the sensor is located beneath the supercharger.
    You can drive the car with this condition and it won't harm it according to my dealer. I just didn't push the car
    very hard under that condition.

    Kirk

  10. #9
    PGA2B's Avatar
    PGA2B is offline Cadillac Owners Connoisseur
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    Re: Did i mess my car up? Need your guys info!

    Actually you can do a C.A.S.E. learn with HP Tuners and EFI Live also.

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