Using the Kot Kit I decided that as no regens were imminent I would have a fiddle and see what the EGR valves are doing. It's difficult to see what's happening as the Command, Actual, and error values are all over the place. The Error on A seems to be 100% all of the time. Not sure how reliable the readings are and the car is running fine. (touch wood). Has anyone had any experience of using the kit for this purpose?

Pete