Close
Our automotive experts have put together the following information about the P269B 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 P269B code.

OBD II Fault Code

  • OBD II P269B

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

    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 P269B will be stored.

    Decreased engine performance Symptoms

    • Decreased engine performance
    • DPF regeneration may not occur

    Common Problems That Trigger the P269B Code

    • Glow plug control module failure
    • Glow plug relay failure
    • Powertrain Control Module (PCM) failure
    • Wiring issue
    Not the OBD-II Code You're Looking For?

    No comments yet...

    Sign in to comment