Question 1

What is a diesel particulate filter (DPF)?

Accepted Answer

The diesel particulate filter or DPF is a component of the diesel engine exhaust system that captures solid pollutant particles before they exit through the exhaust pipe. It has been mandatory on all diesel vehicles since Euro 5 regulations.

Question 2

How do I know if my particulate filter is clogged?

Accepted Answer

The main symptoms are: loss of power, engine limp mode, increased fuel consumption, frequent regenerations, excessive smoke and warning light on dashboard. If the DPF warning appears, the system needs to be checked as soon as possible.

Question 3

What is particulate filter regeneration?

Accepted Answer

Regeneration is an automatic process where the filter increases its temperature (up to 600°C) to burn accumulated particles. It occurs every 400-800 km on motorways. If you only make short journeys, the filter may clog without completing the regeneration cycle.

Question 4

Can a clogged particulate filter be cleaned?

Accepted Answer

Yes, in many cases it can be cleaned through forced regeneration at a workshop or specialized chemical cleaning. However, if the filter is severely deteriorated or cracked, it needs to be replaced. Our replacement filters are type-approved and guarantee the same performance as the original.

Question 5

Is it legal to remove the particulate filter?

Accepted Answer

No. Removing the particulate filter is illegal in the UK and Europe. The vehicle will fail the MOT test, fines can reach £1,000 and it is harmful to health and the environment. Additionally, it can damage the engine by modifying the electronic management.