5 Common Symptoms of a Blocked DPF and How to Fix Them

A Diesel Particulate Filter (DPF) plays a vital role in keeping your diesel vehicle eco-friendly and efficient. But like any component, it can become clogged over time. Recognizing the symptoms early can save you from costly repairs and downtime. Here are the five most common signs of a blocked DPF and how to deal with them.

1. Loss of Engine Power

One of the first indicators is reduced acceleration and poor engine performance. A blocked DPF restricts airflow, making it harder for your engine to “breathe.”

Solution: A professional DPF cleaning restores the filter’s flow and brings back your vehicle’s performance.

2. Increased Fuel Consumption

If your vehicle suddenly starts using more fuel than usual, the DPF could be the culprit. The engine has to work harder to push exhaust gases through the clogged filter.

Solution: Cleaning removes soot and ash deposits, improving fuel efficiency.

3. Warning Light on the Dashboard

Modern vehicles have sensors that monitor DPF condition. When the filter is full of soot, the DPF warning light will glow. Ignoring this sign can cause severe engine damage.

Solution: Don’t wait for regeneration to fail. Book a manual or machine cleaning session immediately.

4. Excessive Smoke from Exhaust

If you see black smoke coming from your exhaust, it means the DPF is no longer filtering properly. This is not just bad for your vehicle but also harmful to the environment.

Solution: Get a diagnostic test followed by a thorough cleaning.

5. Strange Smells or Overheating

In severe cases, you may notice a burning smell or unusually high engine temperatures. This happens when trapped soot ignites inside the DPF.

Solution: Stop driving and seek professional cleaning or inspection to prevent damage.

Final Thoughts

A blocked DPF is more than an inconvenience—it can shorten your engine’s life and increase operating costs. At DPF Clean Pro, we use advanced water + air pulse technology to safely restore filters to up to 99% efficiency. Don’t wait for warning signs—book your cleaning today and keep your engine running smoothly.