How do you trigger a DPF regeneration? When the DPF warning light lights on the dash WITHOUT the EML / Check engine light, the DPF regeneration / cleaning button should be used. This warning light indicates that the DPF has reached its defined particulate matter limit and requires care, or, to put it another way, it is blocked.
Not easy on Cornish roads! If the regenerations are working correctly you won't need the high revs and or distance. The autobox will be controlled by the ECU, just don't fight it and put it in a higher gear manually. I find it will want about 1,800rpm, during the first stages of a regeneration. Doesn't up change as normal, during a regen.
Emergency Regeneration. Yellow or Red “REGEN REQUIRED” light comes “ON” Driver must choose one of the following options to perform this regeneration. If one of the following options is not completed, Limp Home Mode may be activated. Running Option 1: Operate vehicle above 30mph for approximately 20 minutes.
Regeneration can be spontaneous (if temperatures in the DPF reach burn-off), or triggered by the diesel ECM. Problems can arise if the vehicle is not driven for a sufficient amount of time to complete a successful regeneration. If this occurs several times, the DPF can be overloaded and the MIL will trigger. Regeneration lasted 23 miles. Speed during regen: 60 to 70mph. RPM: kept around 2k RPM. Ended at 1513 miles. Avg MPG during Regen: 10.1. Burned 2.1 gallons diesel during Regen. Big difference is regens on the 2011 were lasting around 5 to 7 miles verses 23 miles on the 2015 .
For regeneration to start, the turbocharger needs to build enough heat to trigger the process. A faulty turbocharger can prevent regens and eventually cause a DPF failure. A Clogged DPF. Over time, DPF filters can become clogged with soot and ash and require professional cleaning.
As long as the above is followed, if vehicle senses that a DPF regeneration needs to be carried out it will do so automatically without the need for any diagnostic tools!!! Another thing you can do, is to use either the more expensive diesels such as BP Ultimate or other premium fuels, or a good diesel additive. DPF REGENERATION. DPF regeneration is the process of burning off accumulated soot from the DPF to prevent it from clogging and reducing the engine’s performance. When the soot builds up, the DPF’s backpressure increases, which can lead to a loss of power and fuel efficiency. To regenerate the DPF, three methods are available: passive Very little difference in time to complete, about 15 minutes. The only way to know it is regenning (without a scanner) is to watch the % decrease from 100% to 0%. My % typically goes from 0 to ~60% fairly quick, then drops to ~45%, then increases. At 70%, it increases 2% about every 10 miles driven on the highway. ENm93Gk.
