diagnostics

    DPF Problems: Symptoms, Causes and Solutions

    11/10/20246 min
    dpf
    diesel
    diagnostics
    emissions
    DPF Problems: Symptoms, Causes and Solutions

    What is DPF?

    DPF (Diesel Particulate Filter) is a soot filter installed on diesel vehicles to reduce particulate emissions. Over time, the filter clogs with soot and requires cleaning.

    Symptoms of Clogged DPF

    • DPF warning light on dashboard
    • Reduced engine power
    • Increased fuel consumption
    • Car entered limp mode
    • Frequent regeneration attempts

    Causes of Clogging

    1. Short trips — filter doesn't heat up enough for regeneration
    2. Low-quality fuel — produces more soot
    3. Engine malfunctions — e.g., leaking injectors
    4. Disabled EGR — disrupts system balance

    Solution Options

    1. Forced Regeneration

    Performed with diagnostic equipment. Filter is heated to high temperature, soot burns off.

    2. Filter Cleaning

    Chemical or ultrasonic cleaning of removed filter.

    3. Filter Replacement

    Installing new original or quality aftermarket filter.

    4. Software Deletion (track use only)

    For vehicles used exclusively on closed circuits.