Yes. I haven't checked using my code reader, but what it should do is rise progressively as miles accrue since the last re-gen, then when it hits the programmed threshold, it will initiate the re-gen and drop again. In fact, I think any soot measurement for the DPF is just a value calculated based off the actual measurement of the differential pressure.Interesting post. I would imagine it varies based on soot load. That would be another relevant data point.