No more limp mode
Fix the root cause and the warning stays off.
Diesel particulate filter faults
DPF problems fixed — diagnosis, regeneration & solutions
DPF light on, limp mode, regeneration that never finishes? Most DPF faults are caused by something else — a sensor, an EGR fault, short journeys. We find the cause, force a regeneration where it is safe to, and only then talk about anything else.
Cause firstsensors, EGR, journeys
Forced regenwhere it is safe to
On siteno recovery truck needed
DPF solutions
Why DPFs block — and why replacing it is rarely the answer
A diesel particulate filter traps soot and burns it off during regeneration, which needs sustained speed and temperature. Short journeys, a faulty pressure sensor, a sticking EGR valve or an injector problem all stop regeneration finishing — and the filter fills.
Fit a new filter without fixing that cause and it blocks again. So we start with live data: differential pressure, exhaust temperatures, soot and ash loading, and the faults that are really driving the problem.
Where the filter is serviceable we can run a forced regeneration on site and reset adaptations after repairs. For off-road, motorsport and export vehicles we can supply DPF solutions in software — never for a vehicle used on UK roads.
The law, plainly: removing or disabling a DPF, EGR or AdBlue/SCR system on a vehicle used on UK public roads is illegal and is an MOT failure. We diagnose and repair the fault first. Removal solutions are supplied only for off-road, motorsport and export vehicles, and we will ask you to confirm that before any work is done.
The result
What a proper fix gets you
Avoid a new filter
Many "blocked" filters only need the fault fixed and a regeneration.
Honest diagnosis
You see the live data and the reason, not just a price.
Done where you are
We come to the car — no recovery truck needed.
How it works
From first message to road test
- 01
Describe the symptoms
Warning lights, limp mode, journey patterns — it all helps.
- 02
Live-data diagnosis
We read the faults and the sensor data to find the real cause.
- 03
Fix and regenerate
Repair advice or work, forced regeneration, adaptations reset.
Questions
DPF solutions — your questions answered
Why does my DPF keep blocking?
Usually short journeys, or a fault stopping regeneration — a sensor, the EGR valve or an injector. We find which one before anything else.
Can you clean my DPF on my drive?
We can run a forced regeneration on site when the readings show it is safe to. Heavily ash-loaded filters may need off-car cleaning or replacement.
Is DPF removal legal?
Not on a vehicle used on UK roads — it is illegal and an MOT failure. DPF solutions are supplied only for off-road, motorsport and export use.
Will a remap help my DPF?
A good file can reduce soot production, but it will not fix a failed sensor or a blocked filter. Diagnosis comes first.
How long does a forced regeneration take?
Typically 20 to 40 minutes, depending on the vehicle and soot load.
Mobile · we come to you
DPF light on? Get it looked at properly.
Send the reg and the symptoms — we will tell you what we need to check.