A DPF that reaches 90% or approx. 45 grams full will be beyond regeneration and require complete replacement. Depending on your vehicle make and model a failed Diesel Particulate Filter can cost upwards of £1000 to replace . @mareng, do you maybe know, why from time to time after regeneration almost ends, pm_gen from 0 jumps to 1 and then regenerations stops. Pm_gen after few minutes drops to around 0.4,and this is it. Its a strange software glitch which I noticed even with 2.2 R2 motor in my previous mazda 6. 6) Clean or Replace DPF. If a clogged, damaged, or blocked DPF is the cause of your problem, you will either have to clean it or replace it. If it isn't damaged, start cleaning the system first. When it comes to cleaning the DPF, it is generally recommended to take the car in and look for special assistance while attempting to clean the DPF. 387 posts · Joined 2017. #23 · Feb 25, 2018 (Edited) The best and optimal way for dpf regeneration is to drive with a constant speed on 5 or 6 gear and keep it at around 2000-2500rpm max. Have a look into my thread for more info about DPF regeneration and how to monitor its frequency, here. They drove it around town for like 10 miles and would call back saying they couldn't duplicate. The last time i picked it up it started a regen and the check engine light came on. I took it back and they pulled code P2459 (DPF regeneration frequency) they brought it back in and said well you only have 8% oil life left and that must be why. Paying attention to the frequency of a vehicle’s regeneration cycles is the most effective way to determine whether or not there has been significant ash buildup in its DPF. If they are ignored, the end result could be an irreversibly-damaged DPF that is cracked, glazed or melted. DPF_SOOT_INF stayed at 4 (while the DPF_SOOT_OL continued to rise). At this point DPF_SOOT_PCT_CL began to fluctuate. 2019.07.13.0942.03 – RegenTest.Screenshot.FORScanLite_003 After a while DPF_SOOT_PCT_CL and DPF_SOOT_INF began to drop before reaching the mileage limit of 497.1 or the DPF_SOOT_PCT_OL of 100%. Regen began at the mileage limit. 0. Nov 10, 2022. #1. Wanted to see if anyone else is currently having or has had this issue in the past. My 3500 is maybe a few months old, however during one of my longer drives the check engine light came on. After reading it with a scanner and checking the info provided on the dash (such as temps, as well as where it tells you the DPF is IpOTAR.

mazda 6 dpf regeneration frequency