Active regeneration is advised to be an option when the DPF filter is seriously clogged. Also Read: Vehicles Capable of Towing 10000 Ibs How Often Should a Truck Regen? Active regeneration, which involves burning off built-up soot stored in the diesel particulate filter(DPF), can occur as frequently as once daily, depending on how you drive. 1592 posts · Joined 2010. #2 · Nov 9, 2012. Active Regen is anytime the truck is dumping extra fuel to raise EGTs to clean the filter. Passive Regen is anytime the truck is under enough load for the EGTs to be high enough under normal operation to clean the filter. That's all I got. This is called passive regeneration. DPF regeneration (active) Some cars don’t use the motorway often enough. When the accumulating soot reaches about 45%, the DPF switches to active regeneration. The car forces higher exhaust temperatures, burning the soot in the process. Failed DPF regeneration . In towns and cities, some cars do not reach This DPF filter from a Ford 6.4L Powerstroke engine needs to be replaced around 80,000 miles. Once the filter becomes 90% plugged it can’t be regenerated by driving or undergoing a forced regeneration using a scan tool. Active regeneration takes around 5 to 10 minutes to complete, and normally happens every 300 miles or so depending on how you drive and how often you use your car. When active regeneration is taking place, you may notice a change in how the car sounds and feels – this is due to increased power to the cooling fans and a faster engine idling speed. Yeap, the VW DPF's rely on temps being raised by normal driving - they are passive. They dont initiate a 'regen' as ours do and raise the temperture via the ecu. I mate had a leon and he often had to take it for a 20 min mway drive to clear the DPF warning light. Burning that much fuel kinda defeats the point of owning a diesel. This is the regen. DEF = Diesel Exhaust Fluid, used to reduce nitrogen oxide compounds (NOx) in the exhaust. DPF = Diesel Particulate Filter, captures the “soot” that diesels are known for. If the DPF gets too much soot collected, the system adds a little fuel to the exhaust stream to burn off the collected soot. Save Money by Doing it Right the First Time. Take advantage of FleetServ's fast, effective, and affordable DPF maintenance services. Call us at 1 (888) 315-4228. Our emissions experts will work with you to determine how many will go back on the shelf for next time. In conclusion, understanding why your truck regens so often is critical to keeping it running efficiently. The most common reason for frequent regenerations is a clogged DPF filter. This can happen due to excessive soot buildup over time. Other factors that can cause frequent regenerations include dirty air filters, clogged fuel filters, and Watch on Too much misinformation is being served up about how DPFs work and how they regenerate. It’s time to sort that out, here and now 916owe.