07927 860502

DPF, EGR & ADBLUE / SCR DIAGNOSTICS & SOLUTIONS

Professional investigation of emissions-system faults, warning lights and associated DTC/P-codes.

VEXEN fixes AdBlue, EGR and DPF faults on diesel cars at our unit in Fenton, Stoke-on-Trent. AdBlue is from £249 and DPF or EGR is £249. Either one with a Stage 1 remap at the same time is £349, and DPF regeneration is priced on request. Find your make and model below.

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Put your reg in to go straight to your car, then message us on WhatsApp.

Find your car

Or browse every diesel model

Services:

  • DPF Diagnostics
  • DPF Fault Investigation
  • EGR Diagnostics
  • EGR Fault Investigation
  • AdBlue / SCR Diagnostics
  • AdBlue System Fault Investigation
  • NOx / Sensor Related Diagnostics
  • Associated DTC / P-Code Investigation
  • Engine Management Diagnostics
  • Vehicle-Specific Software / Calibration Solutions where appropriate

Any work carried out on vehicles used on UK public roads must comply with applicable roadworthiness, emissions and MOT requirements.

Prices

  • ADBlue£249
  • DPF/EGR£249
  • Stage 1 + ADBlue£349
  • Stage 1 + DPF/EGR£349

Four services for every diesel model

Each diesel model has its own page for each service. DPF regeneration clears a blocked filter and keeps it in place; the three delete services recalibrate the engine software so the car runs without the system.

  • DPF regeneration

    A forced regeneration burns the soot out of a blocked diesel particulate filter. The filter stays in place. Every diesel model.

    Price on request: message us with your reg

    461 models

  • DPF delete

    The engine software is recalibrated to run without the filter: no blocked DPF, no regenerations, no DPF light. Every diesel model.

    DPF delete from £249

    461 models

  • EGR delete

    The EGR system is switched off in the software: no clogged or sticking valve, less soot in the intake. Every diesel model.

    EGR delete from £249

    461 models

  • AdBlue delete

    The SCR system is switched off in the software: no AdBlue to top up and no pump, heater or NOx sensor faults. AdBlue (SCR) engines only.

    AdBlue delete from £249, depending on the vehicle: some take longer, with the ECU out and diagnostics afterwards

    322 models

Delete services: the legal position

The DPF, EGR and AdBlue delete services are supplied for off-road, motorsport and export vehicles only. Read this before you ask us for one.

The law

In Great Britain a vehicle used on a road must meet the emissions requirements of the Road Vehicles (Construction and Use) Regulations 1986, including regulations 61 and 61A. Removing or disabling a DPF, EGR or AdBlue (SCR) system can mean the vehicle no longer meets those requirements, and using a vehicle on a road in breach of them is an offence under section 42 of the Road Traffic Act 1988. The Driver and Vehicle Standards Agency (DVSA) has stated that it is illegal to drive a vehicle with its DPF removed, with fines of up to £1,000 for a car and £2,500 for a light goods vehicle. Section 75 of the same Act also makes it an offence to alter or supply a vehicle so that its use on a road would be unlawful, unless the work is done for export or there is reasonable cause to believe the vehicle will not be used on a road in Great Britain.

MOT

A vehicle with its emissions control equipment removed, modified or tampered with will fail its MOT. The MOT has checked diesel vehicles for a missing DPF since February 2014, and the current DVSA MOT inspection manual lists emission control equipment fitted by the manufacturer that is missing or obviously modified, and evidence that the DPF has been tampered with, as major defects.

Off-road, motorsport and export use only

We supply these services only for vehicles that will be used off road, in motorsport or competition away from public roads, or exported from Great Britain. We will refuse the work if we have reason to believe the vehicle will be used on a public road in Great Britain in that state. Nothing on this website is an offer to modify a road vehicle so that it breaks the law.

Read the full terms

Diesel models we cover

461 diesel models across 44 makes. Pick yours to see which of its engines carry AdBlue.

Alfa Romeo

Audi

Bentley

BMW

Cadillac

Chevrolet

Chrysler

Citroen

Cupra

Dacia

DS

Fiat

Ford

Genesis

Honda

Hyundai

Ineos

Infiniti

Jaguar

Jeep

KGM

Kia

Land Rover

Lexus

Maserati

Mazda

Mercedes-Benz

MG

MINI

Mitsubishi

Nissan

Peugeot

Porsche

Renault

SEAT

Skoda

Smart

SsangYong

Subaru

Suzuki

Toyota

Vauxhall

Volkswagen

Volvo

AdBlue, EGR and DPF FAQ

Emissions questions

AdBlue is from £249 and DPF/EGR is £249. Either one with a Stage 1 remap at the same time is £349. DPF regeneration is priced on request.

A forced regeneration burns the soot out of a blocked diesel particulate filter and the filter stays in place. A DPF delete recalibrates the engine software to run without the filter.

No. The delete services are supplied for off-road and motorsport use only. Any work carried out on vehicles used on UK public roads must comply with applicable roadworthiness, emissions and MOT requirements. Read our terms before you book.

Only engines with an SCR system use AdBlue, so the AdBlue service is listed on those engines only. Every diesel has a DPF and an EGR valve.

Yes. We investigate emissions faults, warning lights and the associated DTC/P-codes properly before anything is written to the car.

Still have a question? Message us with your reg and what you would like done.

07927 860502