92 348 ABS Error Code | FerrariChat

92 348 ABS Error Code

Discussion in 'Technical Q&A' started by F512M, Nov 3, 2009.

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  1. F512M

    F512M Formula Junior

    Dec 9, 2003
    504
    Houston, TX
    Full Name:
    Jeremy Lawrence
  2. ernie

    ernie Two Time F1 World Champ
    Lifetime Rossa Owner

    Nov 19, 2001
    22,614
    The Brickyard
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    The Bad Guy
    It looks like 38 to me. That last steady light should be indicating that the sequence is over. So if you subtract that last light = 38. At least that's how I see it.
     
  3. F512M

    F512M Formula Junior

    Dec 9, 2003
    504
    Houston, TX
    Full Name:
    Jeremy Lawrence
    Thanks Ernie. That is what I was thinking. So that is a left rear intermittent signal issue. Possible an electrical connection, bad sensor, or possible wheel bearing issue. Since this all started happening after a spin at the track, (on track spin) I am leaning toward the bearing. I replaced the right rear hub assembly last year due to bearing noise. But I will obviously start with the simple things first.
     
  4. AceMaster

    AceMaster Three Time F1 World Champ

    Feb 6, 2009
    34,777
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    Mike
    Good call Ernie, that is what it looks like to me too. So now we need to know what the "38 Code" is? Anyone?
     
  5. F512M

    F512M Formula Junior

    Dec 9, 2003
    504
    Houston, TX
    Full Name:
    Jeremy Lawrence

    35-38: Intermittent lack of signal due to wire breakage or short circuit or internal ECU failure...or due to faulty electrical contacts...or due to irregular ring gear movement...or due to excessive bearing play...or due to Gap too large or small (35=left front, 36=right front, 37=right rear, 38=left rear)
     
  6. AceMaster

    AceMaster Three Time F1 World Champ

    Feb 6, 2009
    34,777
    Ontario, Canada
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    Mike
    Excellent, thanks!
     
  7. F512M

    F512M Formula Junior

    Dec 9, 2003
    504
    Houston, TX
    Full Name:
    Jeremy Lawrence
    #7 F512M, Nov 13, 2009
    Last edited by a moderator: Sep 7, 2017
    Had time today to start diagnosing.. The sensor checked out normal at 1104 Ohms. Moving on to the rest of the system back there. I do not feel any obvious slack in the wheel bearing.....Anyone have experience with ABS systems? This is my first.

    Also, important to note that I have a spare ABS ECU and I get the same error when I use the spare. So I am leaning toward the wheel bearing/ring gear as possible source of the problem. Any thoughts?
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  8. ernie

    ernie Two Time F1 World Champ
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    Nov 19, 2001
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    The Bad Guy
    Have you checked to make sure that the sensor is properly screwed to the hub? It could be that it came loose and thus can't get a reading on the phonic wheel?
     
  9. F512M

    F512M Formula Junior

    Dec 9, 2003
    504
    Houston, TX
    Full Name:
    Jeremy Lawrence
    I pulled on it and it seemed firmly attached.
     
  10. tazandjan

    tazandjan Three Time F1 World Champ
    Lifetime Rossa Owner

    Jul 19, 2008
    39,174
    Clarksville, Tennessee
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    Terry H Phillips
    Jeremy- The ECU cannot sense a wheel bearing problem. Has to be electrical.

    Taz
    Terry Phillips
     
  11. speedy_sam

    speedy_sam F1 Veteran

    Jul 13, 2004
    5,559
    TX
    Full Name:
    Sameer
    Spin the car the other way around. Maybe that will fix it. :D
     
  12. F512M

    F512M Formula Junior

    Dec 9, 2003
    504
    Houston, TX
    Full Name:
    Jeremy Lawrence
    if I read the error code description correctly, if there is any variation in the ring gear travel, or variable gap between the sensor and the ring gear the code 38 will be triggered. By looking at the parts diagram I believe that the ring gear resides on the spindle that rides inside the bearing. The sensor is mounted to the hub. So if the bearings were going out it would cause the gap to fluctuate sending a variable signal to the ECU...

    But I am not an expert here by any stretch of the imagination.. :) is my understanding of the system incorrect?


    Maybe Sameer's idea might work LOL!!!!
     

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