Results 1 to 3 of 3

Thread: Random momentary 'Check engine' + 'traction control failure'

  1. #1
    Senior Member
    Join Date
    Jul 2007
    Location
    New Malden, Surrey
    Posts
    382
    Post Thanks / Like

    Random momentary 'Check engine' + 'traction control failure'

    Some weeks ago, The Duchess started to ”miss” when cold: I put it down to the damp weather affecting the electrics. Yesterday, however, she randomly stuttered for a while longer than previously but, again, about 10 miles into the journey, seemed to behave.

    Today, I thought I'd see if there were any DTCs. After running normally for a few minutes, revs randomly dipped to almost zero, the ”CHECK ENGINE” error appeared, then very briefly ”TRACTION CONTROL FAILURE'. Revs then returned to normal.

    My ELM327+Torque app told me that there were ”No codes in ECU 0”, which didn't seem right. I plugged in my other reader, a U480. That displayed only 1 pending code, P1797 which is a CAN error.

    The battery is a brand-new Yuasa HSB019 - https://www.halfords.com/motoring/batteries/car-batteries/yuasa--hsb019-silver-12v-car-battery-5-year-guarantee-161078.html - less than a fortnight old, with tight connections, so I don't think it's the culprit.

    As I also (still) have rev-related interference on the radio, I strongly suspect either a plug or plug lead breaking down.

    What do we think?
    Last edited by JagFab; 22-03-20 at 16:40.

  2. #2
    Senior Member Andy K's Avatar
    Join Date
    Oct 2008
    Location
    UK
    Posts
    3,501
    Post Thanks / Like
    what about an alternator problem ?
    XJR 2001 Pacific Blue
    Range Rover Sport 2005 Red 2.7 TD

  3. #3
    Senior Member
    Join Date
    Jul 2007
    Location
    New Malden, Surrey
    Posts
    382
    Post Thanks / Like
    Thanks, Andy. Wouldn't the battery be flat, or at least down in voltage/current, if the alternator was dodgy?

    I did some reading and it seems that the error messages were probably caused by the diagnostic software running. Indeed, one of them that I tried, Calista, actually displays a message to that effect.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •