It may be recommended to do back-to-back forced DPF r egens to ensure proper DPF regeneration temperatures due to contamination. We hope this blog post is useful for you guys. If you have any questions, don't hesitate to reach out to us by a phone call at (586) 799-4375 or through email at sales@otrperformance.com
A passive regeneration occurs when the vehicle exhaust system has reached a particular temperature after a sustained period of driving at specific speeds. Generally, this occurs when driving on a motorway at speeds of around 50-70mph for more than 30 minutes.
When it comes to diesel particulate filter (DPF) regeneration, there are three types: Passive -- This occurs when the load and speed of the engine produce temperatures greater than 350 degrees C, and it burns off the trapped soot as the vehicle operates.
If the DPF warning lamp illuminates, it is necessary for the vehicle to be driven at 40 km/h or more with the engine at operating temperature in order for Automatic Regeneration to occur. After approximately 20 minutes of driving under these conditions the DPF warning lamp should switch OFF indicating Automatic Regeneration has successfully

Regeneration times may be longer with poor results. This usually occurs when a DPF has not been removed for routine service by either baking and blowing or an aqueous cleaning which restores the filter to at least 95% of its new capacity. 6. Temperature sensors being faulty will stop the regeneration process.

They occur about every 300 miles with my driving pattern which I believe is when the distance invoked regen occurs. 160-170 miles if doing regular journeys of 20+ minutes on motorways seems to frequent. How do you know they are happening at that frequency?
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    • how often does dpf regeneration occur