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Our automotive experts have put together the following information about the P0381 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 P0381 code.

OBD II Fault Code

  • OBD II P0381

    OBD-II Code Engine may not start is defined as a Glow Plug/Heater Indicator Circuit

    Diesel engines use Glow Plugs to heat up the combustion chambers to enable a quicker cold start. If one or more glow plugs is not working properly, the engine control module (PCM) will set code P0381.

    Engine may not start Symptoms

    • Engine may not start
    • Hard engine start

    Common Problems That Trigger the P0381 Code

    • Glow plug control module failure
    • Glow plug failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue

    Common Repairs Needed for the P0381 Code

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