Cnwcau, Pembrokeshire: Mobile DPF Cleaning
On-site DPF cleaning travels to the car. No workshop, no filter coming off. An engineer travels to your address over in Cnwcau, cleans the diesel particulate filter where it is, runs a DPF regeneration, and you hold on to the filter you started with.
Nobody travels until the figure is fixed by the phone. The visit runs typically around 2 hours and the clean starts from £299.
The light is showing and the car is short of power — that is how we generally find people, and roughly what this page is about.
Your DPF light is on — what next?
The unit is not automatically what is to blame, and that goes first. Several faults put the very same light on the identical panel, which is why a visit starts with a check rather than with a clean.
The motoring you manage in the meantime counts. That is the other thing.
- A long steady run may still be enough, provided the light is amber and the vehicle runs normally. Costs nothing at all, so try that before booking.
- That window has gone once the motor has dropped into limp mode. Motoring will not get there now.
- Get it checked rather than driving it — diesel in the interior, or smoke on hard acceleration, has gone beyond the long-run stage.
What the vehicle has been showing you
By the time the light shows, things have normally been slipping for a while. It is belated news:
- power dropping away, especially going uphill
- an engine whose revs will not pull like they did
- economy that is worse than before
- quietly, the stop/start packs in
- smoke under acceleration, or a diesel smell in there
That is not proof on its own. The light with them indicates a loaded filter.
The reason diesel particulate filters block round Cnwcau
The driving that goes with a rural hamlet like Cnwcau is the worst type for a DPF. Look at a normal week: the local primary school and home, Heol Ty Newydd at a crawl before half nine, a quick trip to Tesco, a hop to the nearest station. Nothing there runs long enough or gets hot enough to finish a regeneration. Unburnt soot that should burn away builds up instead.
Save when you have a regular cause to get out to the M4, under 50 miles from Cnwcau, or out to St Davids under 50 miles away, whole weeks slip past without a sustained stint. Geography is unhelpful.
The moment a DPF regeneration can no longer run
What limp mode comes down to is the motor looking after itself. With power limited and the revs kept low, the regeneration the filter requires will not happen at all. That matters, because setting off one is precisely what a sustained run does.
Getting it up the motorway is the standard advice, and it stands up to a limit. Once the motor is in limp mode you are beyond that stage, and the filter requires a clean rather than driving.
Where the motor stands is where the DPF is done round Cnwcau
On your drive, in a work car park, any place the vehicle can stand for a while: the job takes place with the filter even now bolted on, which is the part most drivers do not anticipate.
Nothing is touched until other faults are eliminated. That requires a scan first: running data off the ECU, soot load by percent and by actual weight, and a review of the sensor readings, glow plugs and associated hardware.
A solution after that is fed in through the entry point on that vehicle, opening out inside the filter to loosen soot and ash a regeneration alone will never budge. Badly clogged filters sometimes require a second pass.
A regeneration comes next, driving off what the clean has freed. Either it goes as a monitored drive out of Cnwcau, with you along, or it is done where the vehicle sits and the running data is read after.
Finally the check runs again — the change confirmed, the light cleared, anything still outstanding written down. Both reports reach you by email, so the numbers are recorded.
What a DPF clean will not fix
One thing is what treatment cures — a filter blocked with soot and ash. It does nothing for:
- sensors, temperature or pressure, showing a block that is not real
- an EGR valve stuck open
- an AdBlue system failure
- glow plugs or injectors blocking the regeneration starting in the first place
- oil working through the filter from a worn turbo
Which is why the scan comes first. Transpiring to be one of them means finding out it before the work starts, not after settling up a penny.
Hollowing the filter out is not a remedy: without a functioning DPF a vehicle fails its MOT, and driving it is against the law. DPF renewal is the phrase people type in, though nothing is exchanged — your existing filter is cleared in place and put back into use. Two more worth noting.
What DPF cleaning comes to across Cnwcau
The treatment opens from £299. A call-out charge applies to every visit, and takes in the call-out itself, the booking, the scan and the advice that goes with it.
Once we know what you own, and broadly what the filter will take, the number gets fixed by phone. A single price for every job would not be honest. A pair of things shift it: what you run, and where you are — Cnwcau itself, across at Llwyncelyn, or otherwise out across the SA postcode area.
Where the diagnostic says a clean will not help, you are not asked to pay for cleaning. You still pay that charge: someone came out, carried out the scan and passed on you the advice.
Aftercare is included by a 30-day warranty: should the light come back within it, an engineer comes back to Cnwcau.
I can sing nothing but praise for DPF fixer from first initial contacted on Tuesday speaking to Christine organising the appointment to Liam coming out today to sort my daughters car out. The service these gentlemen provided is excellent, definitely recommend.
Very honest, friendly and straight forward company and engineer (Attilla). He ran a diagnostic check and said that they could try cleaning it out but it would probably block again within a few weeks. Hence I was very happy to have only paid the £150.
Dan came out on time, did the job perfectly and explained each step of the process clearly to me, along the way; with tips on how to prevent any future DPF cloggages. This is a reliable company, and judging by Dan, with great, reliable technicians! Thanks Dan!
Where we travel around Cnwcau, and what we clean
A single on-site service spans private cars, panel vans and light commercials, HGVs, construction and plant machinery and farm vehicles, and on every one the filter is done where it sits rather than taken anywhere.
The same run that has our engineers on Heol Ty Newydd most weeks picks up Cnwcau, Llwyncelyn, Noyadd Wilym and the spots beyond Cilgerran. Ring anyway from farther out across Pembrokeshire. Coverage runs UK-wide, and the slot you are offered hangs on the diary rather than how far away you are.
The patch around Cnwcau
Cnwcau is a small hamlet situated on the banks of a river in Pembrokeshire, with a low elevation of 46 metres. Cnwcau lies near several other rural communities, including Llwyncelyn and Cilgerran, and is within a short drive of the historic city of St Davids. Cnwcau is characterised by its predominantly detached housing stock, reflecting its rural setting. Cnwcau is located in a scenic area, with the nearby Cwm Plysgog adding to its natural beauty.
Frequent questions on DPF cleaning around Cnwcau
- Will a long drive clear it?
- It may, provided you spot it early and limp mode has not set in. A sustained run at motorway speed is what it wants — not fifteen minutes to Tesco and back.
- How long does the visit take?
- Plan on typically around 2 hours — badly clogged filters sometimes take a second pass, which lengthens it.
- The cost in Cnwcau — what is it?
- It starts from £299, plus the call-out charge paying for the visit, the check and the advice. Both the vehicle and where you are change it, which is why settling it is done by phone.
- Must I be there in person?
- The motor requires a space for two hours or so. Nobody expects you to be in it. The regeneration can be carried out as a watched drive if you would sooner be there.
- How soon can someone travel to Cnwcau?
- It is often same-day or next-day, depending on what is currently in the diary. One phone call to 0303 330 1830 and you will hear what the SA area has available.
- Will the filter be removed?
- On the mobile service, no: the filter is done in place. Neither lifting a filter off nor putting one back on is work we do.
- And if the light returns?
- The 30-day warranty covers aftercare, including an engineer returning to Cnwcau.
Arranging a DPF clean around Cnwcau
Phone 0303 330 1830 and describe what the vehicle is doing: the light, limp mode, smoke, whatever it is. Nobody travels to Cnwcau before you know a price and a date. Anything sent to enquiries@dpf-fixer.co.uk out of hours is answered first thing.
Full public liability cover is held by the engineers, and we are ISO 14001 certified, SafeContractor approved, SSIP Approved and ISO 9001 certified.
As a trading name of DPF Fixer Ltd, Mobile DPF Cleaner operates under the company whose Trustpilot rating is 4.5 out of 5 from 1,989 reviews.