Our automotive experts have put together the following information about the P0859 diagnostic trouble code. We've provided the common symptoms that occur when this code is set along with the frequent repairs that address the issues related to the P0859 code.

OBD II Fault Code

  • OBD II P0859

    OBD-II Code Traction control system is disabled is defined as a Traction Control Input Signal High

    The engine computer (PCM) and the Electronic Brake Control Module (EBCM) constantly talk to each other. When the vehicle is braking, the EBCM will tell the PCM to reduce the amount of power coming out of the engine. If the two modules fail to communicate, code P0859 is stored and the traction control system is disabled.

    Traction control system is disabled Symptoms

    • Traction control system is disabled

    Common Problems That Trigger the P0859 Code

    • Electronic brake control module (EBCM) failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
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