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OBD II Fault Code

  • OBD II P0A08

    OBD-II Code Engine may not start is defined as a DC/DC Converter Status Circuit

    The Hybrid Vehicle Converter converts high voltage from the hybrid system to 12V so that the auxiliary battery can be charged. It also allows the High Voltage System to supply power to other areas such as vehicle lighting and the radio. If the engine control module (PCM) detects a drop in voltage on the auxiliary battery, it will set code P0A08. Failure of the DC/DC Converter may result in the vehicle stalling.

    Engine may not start Symptoms

    • Engine may not start
    • Engine may stall

    Common Problems That Trigger the P0A08 Code

    • Inverter/converter assembly failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue

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