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OBD II Fault Code

  • OBD II P269D

    OBD-II Code Decreased engine performance is defined as a Exhaust Aftertreatment Glow Plug Control Circuit Low

    Diesel Exhaust Fluid (DEF) is used to assist in converting leftover exhaust particles to harmless gases. In order to burn off those particles, the temperature of the exhaust system needs to increase. the injection of DEF Fluid into the exhaust stream brings Diesel Particulate Filter (DPF) up to temperature. The system is then able to convert harmful NOx to Nitrogen, Carbon Dioxide, and water. The Glow Plug keeps the DEF from freezing in extremely cold temperatures. If the glow plug fails to operate as requested, code P269D will be stored.

    Decreased engine performance Symptoms

    • Decreased engine performance
    • DPF regeneration may not occur

    Common Problems That Trigger the P269D Code

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