There are 3 ways to fix a blocked DPF: the home remedy of a regeneration drive, but if the blockage is too significant, it will be too late for this to work. A DPF cleaning service. Which involves removing the DPF, flushing, and cleaning the internals with chemicals. Replace the DPF. 3 days ago · I cleared the codes from the dashboard. Mechanic: Heavy Equipment Tech. If, after clearing the codes and cleaning the DPF, you still have the same codes, the problem will be with the inlet and outlet pressure sensors. The purpose of these sensors is to provide the ECM with accurate differential pressure information. So if an owner goes ahead with the removal in the event of a serious accident if the insurance investigator finds that the DPF has been removed and the vehicle contains an illegal modification, then the insurance company has the right to void the cover, leaving the vehicle and driver uninsured and facing prosecution and a potential criminal Since 2014, having a working DPF has been part of the MOT. A faulty DPF means a failed MOT. Removal of a DPF will cause a warning light to show, which is an automatic MOT fail. Aside from ensuring that your DPF is functioning properly, there are a number of other ways you can look to extend the life of your car. 9. Location. Midhurst, West Sussex. Car. Mercedes Sprinter. Im considering taking my '08 Mercedes Sprinter to an independent garage to have an 'invisible' delete and reprogram on the DPF for £400. I have taken my van to a Mercedes garage several times to try and figure out what has been the cause of thick white smoke which appears after every Once you have the kit, you will need to remove the old DPF filter from your car’s exhaust system. This can be a tricky process, so it is advisable to get some help from a mechanic or someone with experience. After the old DPF filter has been removed, you will need to install the new DPF delete pipe. I have been told that diesel it used to clean the DPF, hence the poor fuel consumption, excess diesel is then fed back into the sump, this contaminates the sump oil. The oil change warning light comes on telling you that the car needs an oil change. If you dip the oil, it is extremely dark, and high (over the full mark). Admittedly, it's hard for an MoT test station to detect whether a DPF has been removed. Unscrupulous owners can easily remove the DPF assembly, and some garages even offer a DPF removal service. The cases can also be civil and criminal matters if the removal/tuning has been done often enough or on a large enough scale. The fines can quickly get out of hand, as the EPA has the right to assess civil penalties of $37,500 per day for significant issues and up to $7,500 per day for minor ones. As yours has been opened up, and had the guts removed, then welded back up, from the outside it looks exactly the same as a stock DPF. As the MOT is a visual inspection to see if it's there, you should be ok. You will only fail under the current regs if you had the unit removed and replaced with a DPF delete pipe. 6cYfOn.