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Our automotive experts have put together the following information about the P0AD4 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 P0AD4 code.

OBD II Fault Code

  • OBD II P0AD4

    OBD-II Code High voltage system may not operate is defined as a Hybrid Battery Pack Air Flow System Insufficient Air Flow

    The Hybrid Battery Pack has a ventilation system to maintain ideal battery operating temperature. If the airflow system becomes clogged, code P0AD4 will be set.

    High voltage system may not operate Symptoms

    • Battery temperature is hotter than it should be
    • High voltage system may not operate

    Common Problems That Trigger the P0AD4 Code

    • Battery Control Module Failure
    • Clogged battery airflow passageway
    • High voltage battery pack cooling fan failure
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