DPF Regeneration
Clear a blocked DPF, switch off the warning light and restore performance. A fully road-legal restorative service with no impact on your MOT.
Restore Your DPF, Keep It Road-Legal
Your DPF traps the soot produced by combustion and burns it off at high temperature in a process called regeneration. On vehicles that mostly do short trips or town driving, the exhaust never stays hot enough for long enough, the filter clogs up and the DPF warning light appears - often followed by reduced power or limp mode.
A forced regeneration uses a dealer-level diagnostic tool to safely command the ECU into a regen cycle while the vehicle sits at idle. Fuelling, exhaust temperature and emissions parameters are managed throughout the cycle to clear the soot load without damaging the filter. Once complete, the warning light is reset and your vehicle is back to running properly.
Nothing about your emissions equipment is removed, blanked or remapped. The DPF stays fitted and fully functional, your vehicle stays MOT-legal, and the manufacturer's emissions system continues to work as designed. This is a restorative service - not a delete.
What's Included
When You Need A Regen
DPF Warning Light
The DPF or particulate filter light has come on, sometimes with reduced engine power. The ECU is asking for a regen cycle that isn't happening on its own.
Short-Trip Driving
Mostly town, school-run or short commute mileage. The exhaust never gets hot enough for long enough to passively burn off the soot load.
Aborted Regen Cycles
Frequent short journeys mean the vehicle starts a regen but never finishes one. Repeated aborted cycles cause the filter to clog progressively.
If a forced regen isn't enough to clear your filter, the next step is usually our DPF Cleaning Solution. For off-road, track or competition vehicles where the DPF is causing ongoing reliability issues, see our DPF / EGR Deletes service (off-road use only).
Frequently Asked Questions
The Diesel Particulate Filter (DPF) traps soot from your exhaust to reduce emissions. Periodically, the filter needs to burn off that soot at high temperature - this is called regeneration. On long motorway drives this happens automatically (passive regeneration). When it doesn't get the chance, the filter clogs up and your vehicle triggers a warning light, loss of performance, or limp mode. Forced regeneration uses a diagnostic tool to safely command the engine into a regeneration cycle and clear the filter.
Yes. Forced regeneration is a fully road-legal restorative service. The DPF stays fitted to the vehicle and continues to function as designed - we're simply triggering the cleaning cycle that the vehicle would normally run itself. Nothing about your emissions equipment is altered, removed or remapped, and there is no impact on your MOT.
Passive regeneration needs sustained high exhaust temperatures, which usually means 20-30 minutes of motorway driving. If you mostly do short trips, town driving or stop-start journeys, the DPF never gets hot enough and soot builds up. Other causes include a stuck EGR valve, a failing differential pressure sensor, low fuel levels triggering an aborted regen cycle, or interrupting a regen by switching the engine off mid-cycle.
It depends on how blocked the filter is. If the soot loading is within the range the manufacturer allows, a forced regen will usually clear it. If the filter has been left blocked for a long time, has been damaged, or has accumulated ash (which can't be burned off), a forced regen alone may not be enough. In that case the next step is a cleaning treatment, and in rare cases the filter needs to be replaced. We'll be straight with you after the diagnostic.
Plan for around an hour. That covers a diagnostic read of the ECU, the regeneration cycle itself (typically 20-40 minutes), and a post-regen check. We come to your home or workplace anywhere across Manchester - the vehicle stays parked up at idle, so there's no need to take it on a drive.
Regeneration clears the current soot load and switches off the warning. To keep it off, the underlying cause matters. If your driving style hasn't changed, the filter will eventually clog again. We'll talk you through what's likely to have caused this regen failure and what to do to avoid it - whether that's an occasional motorway run, a sensor repair, or addressing a stuck EGR. Honest advice, every time.
Got A DPF Warning Light?
Call us to discuss your vehicle. We come to you across Manchester, 7 days a week.