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EngiClean mobile technician van at a customer's home
DPF warning light & limp mode · Herts, Beds, Bucks & NW London

DPF Warning Light On? We Come to You and Clear It

★★★★★
Rated 5.0 from 410+ Google reviews

Stuck in limp mode in Watford, Luton or Harrow? We clean your DPF on your driveway and clear the light, usually a clean, not a £1,000+ swap.

  • Same or next day, sorted in about an hour
  • Fixed price agreed first: clean from £280
  • Honest diagnostic from £120 if you want certainty first
  • 3-month warranty against re-blocking

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★ 5.0 from 410+ Google reviews · Fixed price agreed first · 3-month re-blocking warranty
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No obligation · prefer to talk? Call 07375 822541
No DPF removal neededClears light & limp modeFixed price agreed firstAll makes & models8am–8pm, 7 days

What the light is telling you

Your diesel particulate filter traps soot and burns it off on longer runs. Short, stop-start trips (the daily reality around NW London and the M25) stop that self-clean from finishing, so the filter blocks up.

Amber DPF light

The filter is filling. On some cars the dash says "Exhaust Filter" (Ford, Vauxhall) or "Anti Pollution Fault" (Peugeot, Citroën) instead: same system, same fix.

Limp mode / low power

The engine is protecting itself from a badly blocked filter. We clear it at your driveway and restore full power.

Repeated failed regens

If the car keeps trying and failing to regenerate, the soot load is past what driving can fix. It needs a professional clean.

What happens when we arrive

1

Diagnostic first

We read the codes and check the filter's actual state, so you're never sold a clean you don't need.

2

On-car deep clean

No removal, no days off the road. The clean, done at your home or work, takes about an hour.

3

Road test & warranty

We road test, confirm the light is out and power is back, and cover the work with a 3-month warranty against re-blocking.

EngiClean technician carrying out an on-car DPF clean
On-car deep clean at your home or work
Professional DPF diagnostic and cleaning equipment
Diagnostic-led: we test before we clean
EngiClean van with mobile cleaning kit on board
Everything on board, nothing for you to do

Straight answers, before you spend anything

When a clean is the fix

A blocked but undamaged filter: warning light, limp mode, sluggish power, failed regens. This is most cases we see, and it saves £1,000+ against a new DPF.

When it isn't

A cracked or melted filter, or an underlying fault (sensor, injector, EGR) that caused the blockage. The diagnostic finds this first, and we tell you straight rather than clean a filter that can't be saved.

Mobile, fixed-price and sorted in one visit: no garage, no waiting.

Simple, upfront pricing

You approve the price before we start, and we'll beat any genuine like-for-like quote.

Diagnostic Health Check

Full DPF system scan & live data report.
From £120 + VAT
  • Comprehensive DPF system scan
  • Live data & backpressure testing
  • Digital diagnostic report
Request a quote
Most popular

Premier DPF Clean

Diagnostics, chemical DPF deep clean & road test.
From £280 + VAT
  • Full pre- & post-clean diagnostic report
  • DPF chemical deep clean: up to 98% of soot
  • 3-month warranty against DPF re-blocking*
Request a quote

*Subject to driving conditions. Save £1,000+ against a replacement DPF: clean it, don't replace it. We'll beat any genuine like-for-like quote (the same on-car chemical clean, shown in a written quote).

All makes & models

AudiBMWMercedesVolkswagenFordVauxhallLand RoverNissanPeugeotCitroën+ all other makes

Why local drivers choose EngiClean

We come to you

Home, work or roadside. No garage visit, no waiting room, no days off the road.

Fixed price first

The price is agreed before we start. No surprise costs, ever.

About an hour

Diagnostic, clean and road test in a single visit while you get on with your day.

3-month warranty

Cover against re-blocking, plus honest advice if a clean isn't the right fix.

Fast local response

Based in the Watford area, covering Hertfordshire, Bedfordshire, Buckinghamshire and North West London inside the M25. Same or next day, 8am–8pm, 7 days.

Hertfordshire

WatfordHemel HempsteadSt AlbansHarpendenBorehamwoodRickmansworthStevenageWelwyn Garden CityHatfieldBroxbourneHoddesdonWare

Bedfordshire

LutonLeighton Buzzard

Buckinghamshire

AylesburyCheshamDenhamGerrards Cross

North West London (inside the M25)

BarnetHarrowEdgwareUxbridgeFinchleySouthgateEnfieldPinnerNorthwoodRuislip

What our customers say

★★★★★

"Sy did a DPF clean on our Ford Kuga, very professional and explained everything. Great bloke, would definitely use again."

Marj Carr · Google
★★★★★

"Called at 9, the technician was with us by 10.30. Fully explained the process over the phone before arriving."

David Bellfield · Google
★★★★★

"Came down for a DPF clean on my Porsche and couldn't be happier. Absolutely fantastic from start to finish."

Ayman Yehia · Google

Quick answers

Can I just keep driving?

Not for long. A blocking DPF strangles power and can lead to damage that a clean can't fix. Early action is the cheap option.

Will a motorway run fix it?

Sometimes, if the light has only just come on and the car can still regenerate. Once limp mode hits or regens keep failing, driving won't clear it.

How fast can you get to me?

Often the same day, usually next day at the latest, anywhere in our Herts, Beds, Bucks and NW London patch.

How much is it?

Diagnostic from £120, full on-car clean from £280, fixed and agreed before we start. Cleaning saves £1,000+ against a replacement filter.

Get the light sorted today

Free quote in 30 seconds, or call us 8am–8pm, 7 days. Same or next day across Herts, Beds, Bucks & NW London.

Get my free quote

Done 120,000 miles or more? Add our 2-stage deep clean

2-stage on-vehicle DPF clean — +£50 +VAT

On engines past 120,000 miles, soot and ash sit deeper in the filter. Our 2-stage on-vehicle clean is a deeper DPF clean carried out at your driveway or work, with the engine carbon clean and full diagnostics included. We'll tell you from your reg whether your vehicle needs it — agreed up front, before anything is booked.

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