389 ABS light

Discussion in 'Peterbilt Forum' started by Zmmdawg, Jun 15, 2021.

  1. Zmmdawg

    Zmmdawg Bobtail Member

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    Jun 15, 2021
    0
    Have an 09 389. Tractor ABS light used to only come on when I ran in the rain. Then progressively got worse. Code said right rear wheel. I replaced speed sensor and light went away for 2 days. Now back on. Replaced the ABS module. Went away for 2 days then came back on. Any suggestions on what to check next.
     
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  3. spsauerland

    spsauerland Road Train Member

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    Wiring, probably under greasy clump under 5th wheel.
     
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