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Our automotive experts have put together the following information about the P0956 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 P0956 code.

OBD II Fault Code

  • OBD II P0956

    OBD-II Code Powertrain Control Module (PCM) failure is defined as a Auto Shift Manual Mode Circuit Range/Performance

    Some vehicles equipped with automatic transmission will give the driver the option of selecting the desired gear while driving, known as Autostick Shifting. The shifter will usually either have a + ahd - button on it, or shift side to side when in Drive. If the downshift switch does not function correctly, code P0956 will set and the Autostick shift function will be disabled.

    Powertrain Control Module (PCM) failure Symptoms

    • Autostick shifting will be disabled

    Common Problems That Trigger the P0956 Code

    • Autostick shift switch failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
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