850 ABS good in COLD weather

Discussion in 'Volvo 850' started by fred, Jan 3, 2004.

  1. fred

    fred Guest

    In COLD weather the ABS light stays off. As soon as the weather warms up,
    the light comes on. My mechanic ( a bright guy ) says the PCB board is
    failing on the ABS ECU, and in cold weather, resistance is lower, hence no
    the volvo dealer (!?!) said the code was the right rear wheel sensor (see
    bay13) and basically this indicates the ABS ECU rather than the wheel
    Hello cold weather!

    Comments welcome!
    fred, Jan 3, 2004
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  2. fred

    Jordan B. Guest

    This is apparently a very common fault on 850s. I've even heard it happens
    on S/V70s but I've been lucky so far. In fact if the Toronto weather stays
    the way it is now I may not ever need my ABS this winter!!

    Jordan 1999 S70 Loaded!
    Jordan B., Jan 3, 2004
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  3. fred

    John Horner Guest

    It seems that probably every 850 ABS controller is going to fail. The
    failure/replacement rate reported on various web sites is through the roof.

    Our '96 made it to 90k miles and six years before the thing failed, which
    still seems much too soon for a $500 part.

    Of course Volvo has done nothing to address the issue except to collect
    money for replacement parts.

    Apparently Volvo is enjoying collecting our money!

    John Horner, Jan 5, 2004
  4. fred

    Sean Nugent Guest

    Dunno where you are but try "billy davidson"


    Who may be able to help with fixing the ABS

    Sean Nugent, Jan 10, 2004
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