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OBD II Fault Code

  • OBD II P202F

    OBD-II Code Wiring issue is defined as a Reductant/Regeneration Supply Control Circuit Range/Performance

    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. If DEF Injector fails to operate properly, code P202F will set.

    Wiring issue Symptoms

    • DPF regeneration may not occur

    Common Problems That Trigger the P202F Code

    • DEF injector failure
    • Wiring issue
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