4 September 2012
DPF Regeneration
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DPF Regeneration


Regeneration is a process done either passively or actively.

“So what does this mean for someone who knows nothing or very little about cars or engines”


Passive DPF regeneration is an automatic process that takes place when the exhaust temperature gets high enough for this process to take place. Usually long motorways journeys do the trick but not everyone drives on a motorway that’s why manufactures have built in an active regeneration function where the engine management computer (ECU) takes complete control of the process.

DPF Warning Light | DPF RegenerationACTIVE REGENERATION

This is when the soot level reaches approx. 45% and the ECU makes small adjustments to the fuel injection timing to increase exhaust gas temperatures to approx. 600 degrees and beyond. Usually the DPF warning light will be on at this stage. You should then drive the vehicle for around for 10-15 minutes at speeds greater than 40mph with all electrical equipment and lights turned on, so there is as much load as possible on the engine. If this process never gets complete or gets interrupted by stop start journeys the soot levels will continue to build up until around 75% then you can expect more warning lights to appear and the vehicle to limited on power by the ECU. At this point you would have to visit a main dealer or someone who specialises in DPF problems.


At the point where regeneration cannot be performed you may want to contact us for advise on removing the DPF system. By doing this you can expect to see more power, no more DPF warning lights, better fuel economy and most of all a thicker wallet at the end of it.

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