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Our automotive experts have put together the following information about the P0593 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 P0593 code.

OBD II Fault Code

  • OBD II P0593

    OBD-II Code Cruise control will not operate is defined as a Cruise Control Multi-Function Input "B" Circuit High

    The Cruise Control System uses several input switches (i.e. Coast and Accelerate) If the engine computer (PCM) sees a signal from more than one switch at a time, code P0593 will set and the cruise control system will be disabled.

    Cruise control will not operate Symptoms

    • Cruise control will not operate

    Common Problems That Trigger the P0593 Code

    • Cruise control switch failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
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