2011 Peterbilt 337ABS Code, Everything Checks Out Good

Discussion in 'Peterbilt Forum' started by habfleet, Jan 7, 2019.

  1. habfleet

    habfleet Light Load Member

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    I have a 2011 337 with a Bendix ABS system . I have a ABS light on indicating "DA left sensor" this is in the dash display. Hook a code reader to it and is giving me code SPN/791 FMI 14 which is a Webco code and not found. I replaced the L/R wheel sensor cleared code and it came back on .Rechecked OK OHm out sensor with in specs. Checked wires to Modulator are OK . So it should be OK ???? I was able to graph the response from all four wheel sensors while driving truck. L/R sensor is straight line no response. Im baffled any help greatly appreciated .Thanks in advance
     
  2. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    Unfortunately you know what you have to do. Issue is in wiring harness between modulator and ABS module from what I can gather from your post.
     
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  3. habfleet

    habfleet Light Load Member

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    Yeap or I was leaning towards the ABS ECM any Idea why it is showing a Wabco code. And Thanks for the reply.
     
  4. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    Wabco, Eaton and Bendix all share code #'s. Your code is in fact for Drive axle speed sensor. Get the side cutters out and start snipping zip ties! Remember, don't rely on volt meter for continuity. 1 or 2 strands of copper will show continuity. Headlight with 12 volts the best way.
     
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