Diesel particulate filter clogging

A clogged diesel particulate filter (DPF) can cause loss of power, excessive exhaust smoke, increased fuel consumption, and a check engine light. The DPF traps soot particles from diesel exhaust, but if it becomes clogged, it restricts airflow and increases backpressure in the engine. Symptoms include slow acceleration, reduced fuel economy, excessive exhaust regeneration cycles, and dashboard warnings related to emissions. Common causes of clogging include excessive short trips (which prevent the DPF from regenerating properly), poor fuel quality, or a failing EGR system. If left untreated, a blocked DPF can cause severe engine damage or force the vehicle into limp mode. Cleaning or replacing the DPF ensures proper exhaust flow and compliance with emissions regulations.

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