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Our automotive experts have put together the following information about the P0728 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 P0728 code.

OBD II Fault Code

  • OBD II P0728

    OBD-II Code Transmission may not shift properly is defined as a Engine Speed Input Circuit Intermittent

    The Engine Speed Sensor tells the Transmission Control Module (TCM) how fast the engine is spinning so the correct gear can be engaged. When the TCM receives an inaccurate signal from this sensor, it can't properly shift the vehicle from gear to gear as the vehicle needs to change speed and rates of acceleration. Most vehicles use the crankshaft position sensor for this information. The engine control module (PCM) or TCM will set code P0728.

    Transmission may not shift properly Symptoms

    • Increased fuel consumption
    • Transmission may not shift properly

    Common Problems That Trigger the P0728 Code

    • Crankshaft Position Sensor (CKP) failure
    • Powertrain Control Module (PCM) failure
    • Transmission Control Module (TCM) failure
    • Wiring issue

    Common Repairs Needed for the P0728 Code

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