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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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