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OBD II Fault Code

  • OBD II P2504

    OBD-II Code Engine may not start is defined as a Charging System Voltage High

    If the battery voltage falls below 10 volts for more than 8 seconds, code P2504 will be stored.

    Engine may not start Symptoms

    • Engine may not start
    • Engine may stall

    Common Problems That Trigger the P2504 Code

    • Alternator failure
    • Battery failure
    • Wiring issue

    Common Repairs Needed for the P2504 Code

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