On-car chemical cleaning
The filter stays on the vehicle
£200
- What it removes
- Chemical treatment removes soot. It does not remove ash.
- Vehicle access
- The DPF does not need to be removed for this treatment.
Choose the right clean for your DPF
Cleaning can be an alternative to replacing a serviceable diesel particulate filter. We check the filter and investigate what contributed to the blockage before recommending a treatment.
Soot and ash need different approaches.
On-car chemical cleaning treats soot. Removing ash requires the filter to be removed and washed off the car.
DPF cleaning options and prices
We confirm which method suits the filter and its condition.
Off-car cleaning
The removed filter is washed
From £250
- What it removes
- Off-car washing removes soot and washes out ash.
- Vehicle access
- The DPF must be removed. Removal and refitting are charged separately from the cleaning price.
Diagnosis comes first
A DPF collects material from the exhaust. Regeneration deals with soot, but ash can remain in the filter. A warning light alone does not tell us which treatment is appropriate.
What we check
- Symptoms, fault reports and previous cleaning or replacement work.
- Whether the filter is serviceable rather than cracked, melted or collapsed.
- Relevant pressure and temperature readings and other faults needing investigation.
- Access for removal and refitting, and the appropriate cleaning method.
Cleaning has limits
Cleaning cannot rebuild damaged ceramic or correct an unrelated engine, sensor or wiring problem. We explain when DPF replacement or another repair is more appropriate.
Begin with our free code scan and printout; DPF diagnostics can help identify the cause where it is unclear.
Common questions
Can a filter block again after cleaning?
Yes. An unresolved engine or emissions fault can cause it to block again. We discuss any findings before cleaning.
Is cleaning the same as regeneration?
No. Regeneration and workshop cleaning address the filter in different ways. We explain which approach, if any, suits the vehicle.
See our emissions diagnostics and repair services for related support.
Discuss DPF cleaning
Tell us whether the filter is fitted or removed, and provide the registration, mileage, fault codes, previous cleaning or regeneration attempts and any modifications. Photos and a part number can help identify a removed filter.
We will quote cleaning and any removal, refitting or diagnostic work.