What is a DPF?

If you own a diesel vehicle, you probably have a diesel particulate filter (DPF). They are designed to help reduce the level of soot your diesel vehicle emits. Diesel cars are notorious for producing black smoke from the exhaust, which can be dangerous for the environment and your own health.

The filter captures and stores soot but, due to their limited capacity, they need to regularly clean themselves through regeneration. This happens under normal driving conditions. This process removes the build up of soot and reduces harmful exhaust emission.

Benefits of a DPF clean rather than replacement

More often than not, a DPF clean will be able to restore your filter and get it back to as new. With our thorough, eco-friendly cleaning service, we remove up to 98% of soot and ash, which makes a huge difference to your DPF. This can help restore fuel efficiency, as well as eliminating the need to purchase a replacement DPF.
We always recommend a clean over an outright replacement, and believe our cleaning service is the best option to help reduce emissions and keep your costs down too.

NHS / Keyworkers – Priority booking and Special Discounts.

To keep your DPF in good shape, you should avoid lots of short journeys in your car, as these can cause blockages. Some oils contain additives that can block your DPF, leading to an anti pollution light appearing on your dash. If your warning light continues to stay on, turns red, or additional DPF lights come on, do not leave it too long before getting it checked out. If you continue to drive with your warning light on you will cause more damage which will become more expensive to fix.

Many garages will offer a DPF cleaning service, but not the full diagnostics examination your vehicle requires. We hear stories all the time of garages simply cleaning a car’s diesel particulate filter without assessing what faults or problems are causing the issues.

Main causes of soot build up

Your DPF is built to collect soot. This is normally removed by passive regeneration. However, certain issues can cause an excessive build up and cause the DPF to clog. This then requires cleaning to unclog the filter. It is usually caused by a combination of the issues below:

– Driving a lot of short journeys, or spending a lot of time in traffic
– Not following vehicle’s service schedule
– Wrong engine oil specifications
– Consistently driving on less than 1⁄4 tank of fuel
– Excessive vehicle mileage or worn engine, causing increased oil burn
– Engine faults or engine management lights
– Cheap or supermarket fuel

The warning signs

There are often tell tale signs that your vehicle may be in need of a DPF clean. If you recognise any of the issues below, you should book in for a diagnostics check. We can then advise you if your vehicle is in need of a DPF clean.

– Warning lights on dash
– Vehicle in limp/derate mode
– Poor acceleration
– MPG lower than it used to be
– Oil level rising
– Excessive vehicle smoke
– High fuel consumption
– Strong diesel smell.

Ignoring these warning signs can cause oil dilution, which can cause damage to your engine and turbo. By addressing these issues early, you reduce your risk of needing a replacement DPF or further costly repairs.

Fault codes related to DPF issues

P1471 Diesel particulate filter (bank 1) regeneration not completed.
P2002 Diesel particulate filter (bank 1) efficiency below threshold
P2003 Diesel particulate filter (bank 1) particulate mass too high
P242F Diesel particulate filter (bank 1) regeneration not active
P244A Particulate filter differential pressure too low
P244B Particulate filter differential pressure too high
P2452 Particulate filter differential pressure sensor malfunction
P2453 Diesel particulate filter differential pressure – sensor malfunction
P2454 Diesel particulate filter differential pressure – sensor voltage too low
P2455 Diesel particulate filter differential pressure – sensor malfunction
P2458 Particulate filter regeneration maximum regeneration time exceeded
P2459 Particulate filter regeneration, regeneration frequency implausible
P246C Excessively high pressures on the inlet side indicate a restriction on the DPF
P2463 is a generic code that is defines as “diesel particulate filter restriction”

Our process

We cover a wide range of vehicles including cars, vans, HGVs and commercials. We also offer discounts for trade or fleet work. We are also specialists in DPF cleaning for agricultural and plant equipment as well as boats and marine engines.
If you approach our garage after seeing a dash fault light, noticing your vehicle in limp mode or a persistent smell of diesel, a DPF clean may be in order. Our in depth process means you can be sure your vehicle will be given a DPF clean using our latest eco-friendly technology.

Below is a step by step explainer of our process:

  1. We undertake a thorough diagnostics test to check fault codes and pressure readings to see if your filter is blocked with soot and ash. We are also checking
    for any electrical or mechanical issues, which may have caused your DPF to
    block. These would need to be rectified.
  2. Next, your DPF is removed and we check the inside of the filter with an
    endoscope and take pictures to document any damage and excess soot buildup.
  3. The DPF is then placed in the cleaning tank, with pressure readings before and
    after to track changes.
  4. We use our camera once again to take photos from inside the filter, checking for
    any damage which may have occurred during the clean (just in case!)
  5. Your DPF is then refitted to your vehicle and parameters are reset, removing any
    fault codes.
  6. An oil filter change and flush is then conducted, before test driving the vehicle to
    ensure everything is working correctly
  7. Finally, we offer advice on keeping your DPF clean and how to reduce your risk
    of later problems.
  8. We also offer a 12 month guarantee and warranty with every DPF clean we
    conduct.

Regeneration process

Sometimes a full clean isn’t necessary, and we can regenerate your DPF without needing to remove it from your vehicle. This is called a static regen. This is only possible in some circumstances, when initiated with our diagnostics tool. If your DPF is found to be over clogged, a full removal and clean will be required. With both services, we offer every customer advice to keep your DPF clean and reduce soot buildup.

Collection and delivery within a 20 mile radius. Loan cars also available.

DPF cleaning is now one of the most commonly-requested services we offer. Book now

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DPF cleaning is now one of the most commonly-requested services we offer. Book now

Enter your details and select a preferred date in the calendar to the right and we will contact you with suitable times and confirm availability.

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