What do DPF Filters do?

Diesel Particulate Filters (or DPFs for short) are filters designed to capture particulates from diesel vehicles. These descriptively named devices are fitted to the exhaust of diesel vehicles to filter out harmful pollutants and particulate matter from exhaust fumes and – with the right conditions – can function successfully for years.

DPFs may become clogged with soot over time, but there are several ways to restore them, including active regeneration, fuel additives and professional DPF cleaning UK services. If you’re concerned about the state of your DPF or want to maintain it to the best of your abilities, read on to learn more about these cleaning techniques.

As the diesel particulate filters are such a crucial part of exhaust systems on diesel vehicles, many safety measures and indicators will alert you when it starts to malfunction. The most immediately obvious are your engine management light and a flashing coil light on the VAG platforms, as well as the ‘limp mode’.

The so-called ‘limp-home mode’ is a reduced power mode that diesel vehicles are designed to automatically switch to when their DPFs are clogged or malfunctioning to protect their engine components. If your car activates the reduced power mode, you should seek mechanical advice or drive to a safe place as soon as possible.

Fortunately, DPFs can clean themselves over time by burning off soot that has built up within the filter, though not everyone can rely on this passive regeneration. During longer drives, your exhaust will continue to heat up until it reaches temperatures high enough to burn soot that has built up within the filter, though many motorists don’t go on long drives regularly enough to rely on passive regeneration.

Take your clogged DPF to a professional DPF cleaning UK service to remove all the soot and restore its functionality in one quick cleaning session: The mechanics there will remove the DPF from your vehicle, soak it in cleaning chemicals and manually clean it before replacing it on your car. The process typically takes between 2-3 hours, and your DPF should be working as good as new afterwards.


Location: United Kingdom

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