300 miles later, the same code was thrown and I noticed the tail pipe was sooty. This time they correctly diagnosed that the DPF and EGR filter needed to be replaced. This was all covered under the extended emissions warranty. When I asked, they reimbursed me for the $50. This process of regeneration refers to the soot being burned away with a high temperature in the Diesel Particulate Filter (DPF). The regeneration takes place automatically while we steadily drive the car, preferably on a highway. Most engines of a new car will actively regenerate DPF if the car is speeding above 40mph for at least 10-15 minutes. Active --If the duty cycle does not produce high enough exhaust temperatures, the DPF becomes loaded with soot, which is indicated by its pressure sensors. Active regeneration is then required. During active regeneration, raw fuel is injected into the diesel oxidation catalyst (DOC) to achieve appropriate regeneration temperatures in the DPF. The thing that gets me is I was on my way to work and continued driving for the extra 20 minutes and 20 highway miles ending at work a few minutes after the regen completed. The DPF gage was at 0. I left work and got 4 miles into my 9 mile commute driving 40-70MPH and the gage went up to 1/8. It normally does it while you’re driving but if you haven’t gone on a good highway drive in a while it’ll do it anyway. The fans can go on for up to 16 minutes after you turn off the engine. Reply reply DPF Lifespan. When you purchase a new car, you should know about the DPF lifespan. These filters are meant to last 100,000 miles. You should clean them every 30,000-40,000 miles to ensure a long life. However, your vehicle's environment may reduce their life expectancy. It's also important to check the fuel type and use low-SAPS oil to avoid To do so, start driving off and maintain a sustained speed of 80 to 100 KM per hour for 30 to 45 minutes to perform the regeneration. The DPF light turns off once you finish with the regeneration . In some cars, you can manually start the regeneration while driving or in a stationary/parked position. Drivers can just engage the parking brake or With Stay Warm, the engine stays warm long enough for the active regeneration to complete. After just a year of launching the Stay Warm feature, school districts are seeing up to a 75-percent decrease in aftertreatment-related issues, while other school districts now have zero DPF-related maintenance issues. .

how long does a dpf regeneration last