Diesel Particulate Filters

Diesel Particulate Filter Cleaning

Our first task is to identify the cause of your DPF becoming blocked. You will then be advised of the cost of repair, should you wish for us to proceed with the work. It is often the case that cleaning is not even required.
At Halls we can reset any error codes using the same procedures that the main dealers use and perform an emergency regeneration to ensure that the complete DPF system is operating correctly so the problem won’t happen again.


Your DPF is cleaned using a specialist process which achieves similar results to those the normal regeneration process that cleans the DPF under normal driving conditions. When soot in the DPF reaches a certain level the ECU will not allow the DPF to regenerate due to the risk of fire. The cleaning method we practice cleans even the most badly sooted DPFs returning the vehicle to its normal working condition.


We can also offer advice and specialist products that can reduce soot build up, ask our staff for details.


DPF Cleaning is usually offered as a same-day service taking about 2 to 3 hours.


Diesel Intake Cleaning

You may require our Diesel Intake Cleaning service if you are experiencing any of the following:


  • Poor Fuel Economy
  • Rough Idle
  • Engine Management Light ON
  • Reduction or Loss of Power
  • Stalling
  • Restricted Intake System
  • Smoking Exhaust
  • Smells from Exhaust
  • EGR Valve Dirty or Blocked
  • Difficult to Start
  • DPF Light On


These problems are often the result of the intake system has becoming restricted due to a buildup of carbon deposits.


Excess soot and carbon gums up piston rings and reduces compression in the process. The injector nozzles then become contaminated with a hard deposit that affects atomisation of the fuel, affecting emissions and often producing more soot.


Cleaning one or two components such as EGR or DPF may have a short-term effect but effectively this treats just the symptom, not the problem.



It is entirely normal for your DPF warning light to appear – it is simply advising you that the DPF needs to regenerate itself.


Your owners manual will include instructions for how to do this. If you can’t find these instructions, the following process will work for most cars.


If in doubt speak to a member of our team about DPF Regeneration.


Things to try yourself:

  1. Ensure the Engine Management Light is NOT on
  2. Ensure the vehicle has at least 1/4 of a tank of fuel
  3. Turn on as many electrical items as you can, air conditioning, lights, heated rear window, radio and so on
  4. Find a long stretch of motorway or dual carriageway where you can drive for up to 15 miles without stopping
  5. Drive until normal temperature has been reached
  6. Once warm, drive in any gear that allows you to maintain 2,000 RPM. In an automatic you will need to select sport mode if possible and select the gear manually
  7. Drive with the engine speed of 2,000 RPM until either the dpf light goes off or until you have covered at least 30 miles
  8. Following the above procedure should allow the car to self clean (or regenerate) the DPF on its own

If the engine management or ABS light (or any other warning lights) are on stop the process and contact us.

Enquire Now
    • "Hills Waste Solutions has a 10 year working relationship with Halls Electrical and has been fitting Brigade 4 camera MDR system with GPS and a 4 sensor sidescan( including turn left and low speed trigger) to all our new vehicles since 2014.   The fitting of this recordable camera equipment provides essential safety benefits for vulnerable road users particularly when vehicles perform left turns. In addition it has proven to be beneficial when processing insurance claims as it provides a factual record of any alleged incident.   Halls Electrical provide Hills Waste Solutions with an efficient service and a ‘can do’ attitude coupled with reliable workmanship."
      Nathan Carr (Depot Manager)
      Hills Waste Solutions
    • "Mercedes Benz UK Limited, have used the services of Halls Electrical Ltd for the last 5 years or so. During this time we have found there service to be extremely professional to our standard of work, reliable, and efficient in the way they have conducted their business.   Our core business is the preparation of used commercial vehicles for resale, and approximately 1000 new commercials.   We have upwards of 5000 vehicles per annum through our workshops, with occasional demand for Subcontractors.   Halls Electrical Ltd has worked with us very closely with the preparation of our new commercial business to the point that they are registered on our COP with the VCA.   When carrying out work on our premises, the employees of Halls Electrical Ltd adhere to all the correct H&S procedures relevant to there works and our environmental policy.   The invoicing is always on time, and correct first time.   I have no hesitation at all, in recommending Halls Electrical Ltd, to carry out work for any company.  "
      Peter Colbridge MIMI AMIRTE AMSOE (Workshop Operations Manager)
      Mercedes Benz UK Ltd
    • "I manage a department that is responsible for providing emergency responses to elderly and vulnerable people that live within the Swindon Borough Council geographical area.A team of Homeline Response Officers are on call 24/7 and use high livery on their vehicles to let people know that we are there. We are the only community alarms providers in the country to have use of the bus lanes for responding to emergencies; we also carry life saving equipment such as defibrillators, time matters! We asked Halls electrical to provide us with appropriate bar lights and high specification markings. We were absolutely delighted with the quotations given. Great value and exceptional workmanship with fantastic communication throughout the process. Highly recommended."
      Jack Sharpe (Principal Homeline & Telecare Officer)
      Swindon Borough Council
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      -*+Ahead of the 2016 motor racing season, Wiltshire business have collaborated to provide fast response medical intervention to racing drivers competing at Castle Combe Circuit. Honda of the UK Manufacturing Ltd of Swindon has donated a brand new Honda CRV to the Wiltshire circuit, which has been converted by Hall’s Electrical Ltd, also of Swindon….

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      -*+It’s Autumn, it’s Hall’s Electrical, it’s our annual offers on equipment and accessories for cars, vans, motorhomes, lorries and boats. Get ‘em while they’re hot!   Eberspacher External Heater Kits Don’t let the cold bite this winter. Invest in a high-quality external heater for your campervan and you’ll stay toasty at night whatever the weather….