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Our automotive experts have put together the following information about the P0ADA 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 P0ADA code.

OBD II Fault Code

  • OBD II P0ADA

    OBD-II Code High voltage system may not operate is defined as a Range/Performance

    The High Voltage System is engaged and disengaged through the Hybrid Control Module. If the Hybrid Control Module cannot control the circuit to the high voltage battery, code P0ADA will set.The Hybrid Control Module may disable the high voltage system.

    High voltage system may not operate Symptoms

    • High voltage system may not operate
    • Vehicle will not charge

    Common Problems That Trigger the P0ADA Code

    • Auxiliary 12V battery failure
    • High voltage control module failure
    • Wiring issue
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