Supplying a diesel particulate filter. It is illegal to supply DPFs that are not type-approved for use on vehicles that are Euro 5 or above.. Checking type approval. All type-approved catalytic Diesel Particulate Filter. taffy056 Posts: 4,895 Forumite. 24 December 2011 at 4:57PM. Hiya guys, I have a Mazda 6 turbo diesel and the DPF light and management light has come on, its a high miler 85k on a 57 plate, I have run over it 2000 rpm for quite a few miles and its not cleared with regeneration, and was wondering my next step with this. Silverado HD and GMC Sierra HD vehicles that are equipped with 6.6L Duramax Diesel engines (RPO LML or LGH) may contain a leak in the seal between the engine-exhaust down pipe and the engine-exhaust pipe. If a leak is present, the intermittent regeneration of the diesel-particulate filter Diesel Particulate Filter Operation in Heavy Duty Diesel After Treatment Systems - On Highway My 2014 Jeep Grand Cherokee Limited with the Diesel engine runs fine despite the check engine light. Since I have owned this Jeep (new) I have had a lot of electrical problems with the Jeep. I am on my 3rd module for the map/GPS/ac control screen. So, I will further investigate a much less expensive solution to the Particulate Matter Sensor/Module. Dealer scan apparently shows problem with the diesel particulate filter. Told by dealer that it would take 2 days to fix at approximate cost of $(NZ)1800. Mechanic's Assistant: Is the warning light flashing or blinking, or is it solid? Dpf removed and cleaned ( I had this done after first forced Regen and later fuel additive method failed and car went into limp mode in a 2010 Mazda 3 1.6 here in Ireland €500) have since sold car Please see another post I have just made about this. The PCM regularly checks the diesel particulate filter for the exhaust pressure and regeneration process. It will set the generic powertrain code P2459 if it detects one of two things: either the exhaust pressure didn’t hit the right level or the passive regeneration process didn’t follow the programmed frequency. TPfP5.