OBD II Fault Code

  • OBD II P063F

    OBD-II Code Engine may not start is defined as a Auto Configuration Engine Coolant Temperature Input not Present

    The engine control module (PCM) has failed its own self-test. The PCM will set code P063F.

    Engine may not start Symptoms

    • Engine may not start

    Common Problems That Trigger the P063F Code

    • Powertrain Control Module (PCM) failure
    • Powertrain Control Module (PCM) software needs to be updated
    • Wiring issue

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