Is this expected? Seems excessive to me... HWY and towing is much better however.
130 miles between active regeneration would be pretty excessive for a mix of city and highway driving. My 22 HO sees mixed drive cycles both loaded and empty, and I recently started logging every active regeneration cycle to track these. Primarily to establish a baseline for what I consider to be normal based on my driving and useage.
It’s important to be careful not to automatically assume that the regenerations are happening frequently based on one or two instances. Remember that active regenerations are either initiated by soot load in the DPF or by the 24-25 hour engine run timer.
Soot load based active regeneration starts at roughly 47% on the DPF gauge which would indicate the differential pressure sensors are estimating about 47 grams of soot trapped in the DPF, or if the soot removal time reaches 24,000 seconds. Whichever comes first.
Timer based active regeneration can start around 24-25 hours of engine run time.
Both cycles need to complete and should return the gauge to 0% at the end. If you’re not allowing them to finish, you may see them start again the next time you drive.
These two cycles can happen back to back, or within a very short time / miles between them. The timer based regen cycle will occur no matter what the DPF soot load is (even at zero).
I would recommend logging all of the cycles for a while. Collect data as I have, and then take a look at the bigger picture of what your truck is actually doing in. If you aren’t getting any DTC’s / MIL, then the truck is passing its onboard diagnostics for now and there really isn’t a need for immediate concern. If this pattern continues, and you indeed are getting frequent regeneration, it
should ultimately trigger a DTC P2459 for “frequency of regeneration”