DPF or engine light on
The ECU detects excessive exhaust back-pressure and switches on the particulate filter or engine warning light.
Services / DPF cleaning
DPF/FAP cleaning and regeneration
Professional diesel particulate filter cleaning with hydrodynamic washing and back-pressure measured before and after. Same-day service at our Rome and Diamante branches, or by courier from anywhere in Italy.
Same dayYour filter is cleaned the same day. If you ship it, only the courier transit time is added.
From all over ItalyBring the vehicle or just the filter to Rome or Diamante, or send it by courier.
Measured resultWe measure back-pressure before and after washing to confirm the filter has been restored.
DPF warning light on? Signs of a clogged particulate filter
The DPF traps soot from the exhaust gases and periodically burns it off through automatic regeneration. When regeneration is no longer enough, the filter clogs and the vehicle warns you.
Loss of power
The engine goes into limp mode and limits revs and power to protect itself.
Increasingly frequent regenerations
Cooling fan running after switch-off, rough idle, acrid smell: the system tries to burn off soot more and more often.
Higher fuel consumption
With a restricted exhaust the engine works harder and diesel consumption rises.
Washing, additives or replacement: what really works
A DPF does not only collect soot but also ash: non-combustible residues from engine oil and, on many filters, from the cerium-based additive. Ash does not burn, so only washing removes it.
- Prevention
DPF cleaner additives
They help burn soot but do not remove ash: useful as prevention, not on an already saturated filter.
- Temporary fix
Forced regeneration via diagnostics
Heats the filter to burn off soot. The ash stays inside and the problem comes back.
- Our service
Hydrodynamic washing
Fluid flows through the monolith in a closed loop and removes soot and ash, at low temperature and without cutting the housing.
- Last resort
Filter replacement
Only needed if the monolith is damaged, cracked or melted. On an intact filter it is the most expensive choice.
How DPF regeneration works
From the initial check to return, with a measured result.
- 01
Initial check
We inspect the filter and measure its back-pressure to assess its condition and rule out damaged monoliths.
- 02
Hydrodynamic washing
Fluid flows through the monolith in a closed loop and removes soot and ash, without opening the housing.
- 03
Drying
The filter is fully dried before the final test.
- 04
Test and return
Back-pressure is measured again to confirm the result, then the filter is refitted or shipped back.
How to get your filter to us
Choose the most convenient option: the service is the same.
Vehicle at our workshop
Bring the vehicle to our Rome or Diamante branch: we remove the DPF, regenerate it and refit it.
Filter only
Has your mechanic already removed the DPF? Bring it in and collect it clean the same day.
Courier shipping
From anywhere in Italy: contact us for instructions, ship it and we send it back regenerated.
Which vehicles
We regenerate DPF/FAP particulate filters of every size.
- Cars
- Vans and light commercial vehicles
- Trucks, buses and heavy vehicles
- Tractors and agricultural machinery
- Earth-moving and construction machinery
DPF regeneration FAQ
Clogged DPF: what should I do?
When the light first comes on, a steady drive on an open road is sometimes enough to let automatic regeneration complete: follow your owner’s manual. If the light stays on or the engine goes into limp mode, the filter is saturated: have it checked before it gets damaged. If the monolith is intact, washing restores it without replacement.
How much does DPF cleaning cost?
It depends on the type and size of the filter (car, van, heavy vehicle) and on whether removal at our workshop is needed. Tell us the make, model and year of the vehicle and we will send you a quote.
How long does it take?
The service is carried out the same day. If you ship the filter, courier transit time both ways is added to the processing time.
What is the difference between DPF regeneration and washing?
Regeneration, automatic or forced via diagnostics, burns off soot at high temperature but leaves non-combustible ash in the filter. Hydrodynamic washing removes both soot and ash, at low temperature and without thermal stress on the monolith.
Do DPF additives work?
Additives lower the combustion temperature of soot and can help as prevention. They do not remove ash, which does not burn: on a filter clogged with ash, washing is the only alternative to replacement.
Is a washed filter as good as new?
If the monolith is intact, washing restores its back-pressure and we confirm it with the final measurement. If the initial check finds cracks or melting in the monolith, washing is not suitable and the filter must be replaced.
Can the DPF be removed?
No. Removing or disabling the particulate filter is illegal, causes the vehicle to fail its roadworthiness test and increases harmful emissions. Washing is the legal way to restore a clogged filter.
Do you also work for garages and mechanics?
Yes, we also regenerate filters sent to us by garages and repair shops. If you want to regenerate DPFs in your own workshop, we also sell washing machines.
Are you a workshop wanting to clean DPFs in-house?DPF/FAP cleaning and regeneration machinesWant to bring us the vehicle?Our Rome and Diamante branches
Need a quote?
Tell us about the vehicle and how you would like to get the filter to us: we will reply with costs and timing.