According to EDGE, Ram has removed the REGEN Distance. So no longer work, always stays at Zero. Not important, I replace it without another PID.
Here the reply from email I received.
I spoke with the engineer today that worked on that vehicle. With the update from the dealer you will no longer have that pid, they removed that pid with their last update. Even the Chrysler tool will not read that pid anymore. Unfortunately we will not read that pid since you had the truck updated.
Thanks,
Edge Products Technical Support