Tried to graph the egr pid on a 2005 caravan and the scale is 0-80 volt

which is too high for the sensor which starts at 4 volt and goes down as it opens

Tried to adjust scaling while in the live data screen by clicking setting and adjust the egr

pid scaling and clicked done but had no effect on the scaling,re entered settings and the scaling

went back to its default setting

What can I do to get the scaling or peak voltage threshold lower

I have graphed  this egr position sensor before on Chrysler before with no issues

but could not on this 2005

Any input would be appreciated

Thanks