In order to burn it clean, the de-installed DPF is put in a burning oven, where it is heated until all remaining soot is burned to ashes. Subsequently, the filter is blown clean with pressurised air until all ashes are completely removed. Rinsing is in fact blowing the filter clean with a watery cleaning solution. Takes 2 hours to remove DPF. Make sure u use penetrating spray like bolt off. Even then I had to cut one fwd stud off. Leave the 3 sensors in DPF and remove on bench. The large one is an air/fuel ratio sensor keep it clean. And bag it. The other 2 are EGT sensors. First I used compressed. If your DPF is getting blocked primarily because of short-commute city driving, it only means one thing = GET A LIFE (sorry, no offence meant ). - Go for a long drive on the highway . - If no time for highway, go for a long drive in the city @ higher speeds. E.g. in Mumbai, it could be the Sea Link & Freeway. Maintaining the DPF (Diesel Particulate Filter) I was a little apprehensive when I bought my 2 litre diesel Insignia as I knew that my usual mileage was not up to maintaining the DPF in good condition. I previously had a Zafira and although this too was a diesel, it was prior to DPF's so I did not have that worry. Once the filter reaches 95% clogged, it must be removed from the car and replaced or cleaned using a DPF cleaning machine. Heavy duty truck services do DPF cleaning but as far as I know, this is not possible for the DPF/cat units used on 2.0L TDI engines because the cat/DPF is combined into one piece. Liqui Moly DPF Cleaner. 2. Cataclean 6160 DPF Cleaner. 3. Wynn’s DPF Cleaner. 4. Wurth Diesel Particulate Cleaner. In this review, we look at the best DPF (Diesel Particulate Filter) cleaners on the market for your Nissan Qashqai and explain why they are so important. DPF filters are fitted as standard on all modern Nissan Qashqai’s and can The DPF Maintenance Clean is a preventative treatment designed for drivers making a lot of short, low-speed trips, when the engine isn't getting hot enough to burn off excess soot. This product works by lowering the point at which the soot burns off. This DPF Maintenance Clean should be carried out every six months to keep your engine free from Now he might have meant it won't get clean necessarily hauling short trips. I have two diesels to haul 5000lbs every day on reasonably short trips. Sometimes they will get full and will display the "keep driving" message to clean the filter. I have my mechanics run a manual regen on both those trucks every Friday just to clean out the DPF. Pulled the following codes: P04DA - Closed Loop EGR Control at Limit - Flow Too High. P246C - Diesel Particulate Filter Restriction - Forced Limited Power. P0402 - Exhaust Gas Recirculation (EGR) Flow Excessive Detected. P2A00 - O2 Sensor Circuit Range/Performance (Bank 1 Sensor 1) Truck now saying Drive to Clean the Exhaust Filter. Under normal driving conditions and with a properly functioning DPF, the filter should only need to be cleaned every 20,000 to 40,000 miles. However, through passive regeneration by driving for 30 to 50 minute run at sustained speed on a motorway or A-road it will help clear the filter. u2FpGG.