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OBD II Fault Code

  • OBD II P0A7E

    OBD-II Code High voltage system may not operate is defined as a Hybrid Battery Pack Over Temperature

    The hybrid battery pack uses multiple sensors to monitor the temperature of each battery cell. If the battery cell temperature gets too hot, code P0A7E will set. The battery contacts will open, disabling the battery pack and hybrid systems, until the temperature comes down to acceptable levels.

    High voltage system may not operate Symptoms

    • High voltage system may not operate

    Common Problems That Trigger the P0A7E Code

    • High voltage battery assembly failure
    • High voltage battery interface control module failure
    • High voltage cooling fan assembly failure
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