[andreigbs]

My understanding is that the SCR system is part of the regen process, insofar as the DPF needs to be scrubbed from time to time of accumulated ash solids. I welcome additional insight.

I'm hoping that it's just something with the wiring but I'm prepared to remove the metering valve, clean up any crystal solids that may be built up and even replace the module itself. What I hate is having to reset the CEL every other start-up...