What does it all mean?
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Northstar Engines and System Technical Discussion Discussion, What does it all mean? in Cadillac Engine Technical Discussion; Ok all pros. I have some questions. I got in my 01 DTS this afternoon and the DIC said "Speed ...
  1. #1
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    What does it all mean?

    Ok all pros. I have some questions. I got in my 01 DTS this afternoon and the DIC said "Speed limited to 90" so I looked that up and apparently that means there is a problem with the RSS system.

    I then pulled the codes and here's what I saw.

    IRC U1000
    IRC U1016
    IRC U1301
    PCM U1056
    ABS U1056
    IPC U1016

    The codes had been cleared a few weeks ago while I was learning about the system so these are all new.

    What does this all mean. The error has not come back, it only happened that one time.

    Thanks

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  3. #2
    Trench's Avatar
    Trench is offline Cadillac Owners Fanatic
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    Re: What does it all mean?

    This should direct you in the proper place.

    http://www.cadillacforums.com/forums...look-here.html



    In fact, It's the stickied post right above yours.


    If the codes have no came back, it "may" have just been a fluke. When you pulled the codes, did they say HISTORY next to them?

  4. #3
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: What does it all mean?

    I looked at that thread already and they're all communication errors. They did not say 'History' but I think they were historical codes. I'm wondering why every system in the car would have a network communications error.

    Quote Originally Posted by Trench
    This should direct you in the proper place.

    http://www.cadillacforums.com/forums...look-here.html



    In fact, It's the stickied post right above yours.


    If the codes have no came back, it "may" have just been a fluke. When you pulled the codes, did they say HISTORY next to them?

  5. #4
    Trench's Avatar
    Trench is offline Cadillac Owners Fanatic
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    Re: What does it all mean?

    Has the battery ever been pulled or fully drained? That can cause a whole slew of codes to be thrown.

    I occational get a communication error for no appearent reason. Never throws a MIL or anything. I just catched it when I pull the Codes ever now and then.

  6. #5
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: What does it all mean?

    Battery has not been drained or pulled since I've had the car. I'll blame it on water and write it off as a fluke. Until next time...

    Thanks

    Quote Originally Posted by Trench
    Has the battery ever been pulled or fully drained? That can cause a whole slew of codes to be thrown.

    I occational get a communication error for no appearent reason. Never throws a MIL or anything. I just catched it when I pull the Codes ever now and then.

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