A Few Codes and Advice
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, A Few Codes and Advice in Past Cadillac Vehicle Discussion; Hi. I have a CL, and I have the following codes in my system. ABS C1295 (I assume this is ...
  1. #1
    venomz is offline Cadillac Owners Member
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    A Few Codes and Advice

    Hi. I have a CL, and I have the following codes in my system.

    ABS C1295 (I assume this is referring to my third brake light, since I also get the traction control issue when using blinkers with the lights on. I also assume this might be tripping the CL?)

    IPM B0429 (From what I can figure out, this won't throw a CL, and is nothing to really bother with?)

    PCM P0171 and P0174 (Every time I have checked it, it has been in the history, but I assume this is related to a vacuum leak somewhere? I've just had the plenum replaced, but afterwards I experienced a racing idle and other weird crap resembling the vacuum leak I had on my last Deville. I'll be taking ti back this Friday - I trust the mechanic and assume he just missed something. Normally I'd do it myself but it's been raining here on every day off I have.)

    AMP U1000 (I assume this is related to my aftermarket stereo. Is there any way to get rid of this code?)


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  3. #2
    basscatt's Avatar
    basscatt is offline Cadillac Owners 10000+ Posts
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    Re: A Few Codes and Advice

    Quote Originally Posted by venomz View Post
    Hi. I have a CL, and I have the following codes in my system.

    ABS C1295 (I assume this is referring to my third brake light, since I also get the traction control issue when using blinkers with the lights on. I also assume this might be tripping the CL?)

    IPM B0429 (From what I can figure out, this won't throw a CL, and is nothing to really bother with?)

    PCM P0171 and P0174 (Every time I have checked it, it has been in the history, but I assume this is related to a vacuum leak somewhere? I've just had the plenum replaced, but afterwards I experienced a racing idle and other weird crap resembling the vacuum leak I had on my last Deville. I'll be taking ti back this Friday - I trust the mechanic and assume he just missed something. Normally I'd do it myself but it's been raining here on every day off I have.)

    AMP U1000 (I assume this is related to my aftermarket stereo. Is there any way to get rid of this code?)
    -------------------------
    codes are meaningless without their definitions -
    and no one has them ALL memorized -

    that being said - some codes are fairly common -

    B0429 - that refers to the rear seat heat/ac controller - probably the #3 MIX DOOR actuator -

    P0171 and P0174 - a BIG vacuum leak -
    most common is the bellows-looking thing between the throttle body and the plenum -
    it tends to split on the bottom - so you can's see it -
    but run your finger under it - and you will be able to feel the split -

    the other less-common cause is a split PCV hose - or rubber elbows -

    U1000 - "U" codes are "lost data communications" codes -
    the "data line" goes through every electronic device throughout the entire car -
    "break" that link - and you are asking for all sorts of goofy electrical problems -

    Cadillacs do NOT like to have their electronics messed with -

    YES - your aftermarket amp is causing the problem -

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: A Few Codes and Advice

    Quote Originally Posted by venomz View Post
    IPM B0429 (From what I can figure out, this won't throw a CL, and is nothing to really bother with?)
    Correct. ONLY P (PCM) codes will trip the MIL.

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