DD15 DPF and re-gen
I have a 2009 Cascadia with a DD15 that has 580,000 miles on it. DPF was changed first time at 300,000. About 3 weeks ago my check engine light came on. I checked all fluids, belts, hoses and all were fine. Turned truck off and took my break. After getting back on road later, light stayed off for a couple of hours then came back on. Continued driving and about 600 miles later the "manual re-gen recommended" light came on. Did the manual re-gen. Everything ok. Same situation about 6 times between MO-CA-NC. Put truck in shop and had DPF replaced. Everything ok. Have been back on road for a couple of days and it is doing the same thing again. Check engine light then 600 miles later "manual re-gen recommended". Is there something that could be preventing it from doing an automatic re-gen? Has anyone else had this problem?
Is this a worthwhile discussion?