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Our automotive experts have put together the following information about the P0A9C 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 P0A9C code.

OBD II Fault Code

  • OBD II P0A9C

    OBD-II Code Wiring issue is defined as a Hybrid Battery Temperature Sensor "A" Range/Performance

    The hybrid battery pack uses multiple sensors to monitor the temperature of each battery cell. If one of the battery temperature sensors reports an excessively high temperature than the other battery temperature sensors, code P0A9C will set.If multiple sensors fail, the High Voltage System may be disabled.

    Common Problems That Trigger the P0A9C Code

    • High voltage battery assembly failure
    • High voltage battery interface control module failure
    • Wiring issue
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