If those circumstances do not happen (short journeys, city driving etc etc) then the system cannot clean that dpf, so after monitoring the pressure in the dpf the warning light comes on and it goes to your dealer. The dealer checks through everything and then carries out a forced regeneration using examiner. Mazda 6 - Mazda 6 Won't start after changing oil - mazda17. I have a 58 plate Mazda 6 2.0L Diesel. I have had the dreaded dpf light come on and took it to the Mazda dealer. They advised changing the oil and filter and regenerating the dpf. I opted to change the oil and filter myself and return it for them to them to do the regeneration. 5.1 DPF Flush cleaning When presented with a limping diesel with blocked DPF garages using, the appropriate diagnostic equipment, can identify when a DPF is blocked beyond the level at which even a forced regeneration is safe. At this point a dealer will suggest a new DPF with a cost to the north of £1000.00. started and you need to start back at point (2) 5. The DPF forced regen process will take between 40 and 80 mins depending on how badly blocked the DPF is. NB. Do not touch the accelerator or clutch as this will cancel the regen cycle. To purposefully cancel the forced regen, place the vehicle into 1st gear. 6. Eventually the DPF light started flashing and in turn the engine light came on and I believe the car has gone into “limp” mode. I have tried putting the car into forced regeneration mode using the wire from sensor to earth point trick. It enters forced regeneration mode and then immediately returns to normal. . A blocked DPF is a restriction in the exhaust system, eventually it may become more difficult to drive. The garage carried out the forced regeneration, apparently a serious amount of heat, however the Engine Management light is still on and they cannot clear it as the code says that there is still DPF blockage.

mazda 6 dpf forced regeneration