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What is DPF?

What is DPF (Diesel Particulate Filters)?
Diesel Particulate Filters — or ‘DPF’s — are fitted on all modern diesel vehicles. They are filters which remove soot from your vehicle’s exhaust gases before they’re released into the atmosphere. DPFs dramatically reduce the emissions of diesel vehicles, and as such are a requirement to meet modern European emission standards. They are also now an MOT requirement on applicable vehicles.

What is a ‘regeneration’?
DPFs are simply filters which catch soot in your exhaust. Over time, the soot will collect and need to be emptied. The process of cleaning a DPF is called a ‘regeneration’.

Do I need to do my own regeneration?
Nope, thankfully your vehicle should take care of it’s own DFP regeneration. However — if there is an error and the vehicle is unable to complete the DPF regeneration, you’ll be alerted by a warning light/message on your instrument panel. You’ll then need to take action.

How do I know if my DPF is ‘regenerating’?
There are a few key clues..

What can prevent a DPF regeneration?

My warning light is on — what do I do?

Don’t panic. The system is warning you that the vehicle needs your assistance to complete its DPF regeneration.

To do this, you’ll need to increase the exhaust temperature. This can be accomplished by simply taking a 10-15 minute drive whilst maintaining approximately 2500 RPMs.

Should the light not turn off, don’t ignore it! If the vehicle is unable to dispose of its soot it could cause very costly repairs and issues. At this point, you should immediately contact your manufacturer or dealer.

How long does a DPF last?
DPF’s are designed to last 100,000+ miles. You can extend their life with proper care, driving and maintenance.