START A FORCED DPF REGEN: A forced DPF regen is performed when a diagnostic scan tool, such as the OTR Reset Tool starts the regen process. Adapters & Cables For more information, please see our Technicians and fleet personnel must keep in mind they waste valuable time, money, and other resources when a forced regeneration occurs unnecessarily. If your truck has reached the 500,000 miles or 800,000-kilometer interval and a check engine light illuminates on your trucks dashboard, then it may be telling you that manual ash must be removed from the DPF. function ShowFlash(FlashFile, FlashTitle) { open('../../Graphics/' + FlashFile, "", "resizable=yes,scrollbars=yes,toolbar=no,location=no,directory=no,status=no,menubar=no,copyhistory=no"); } If both passive and active regens fail, and the DPF filter is in danger of clogging, the system will initiate a forced DPF regen. As opposed to active regen, passive regen is more of an urgent situation, where you need to get your truck parked in a safe area with plenty of space and start a passive regen as soon as possible because the engine is about to shut down. . // ]]>//