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Our automotive experts have put together the following information about the P0ADF 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 P0ADF code.

OBD II Fault Code

  • OBD II P0ADF

    OBD-II Code High voltage control module failure is defined as a Hybrid Battery Negative Contactor Control Circuit Low

    The High Voltage Control Module uses relays to control proper operation of the high voltage system. If one or more of these relays is determined by the control module to be faulty, code P0ADF will be set.

    Common Problems That Trigger the P0ADF Code

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