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Our automotive experts have put together the following information about the P0AC8 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 P0AC8 code.

OBD II Fault Code

  • OBD II P0AC8

    OBD-II Code High voltage control module failure is defined as a Hybrid Battery Temperature Sensor "B" Circuit High

    The hybrid battery pack uses multiple sensors to monitor the temperature of each battery cell. If one of the battery temperature sensors reports an implausible temperature, code P0AC8 will set.If multiple sensors fail, the High Voltage System may be disabled.

    Common Problems That Trigger the P0AC8 Code

    • Battery Control Module Failure
    • High voltage battery assembly failure
    • High voltage control module failure
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