I tested today and evidently it returns a single byte (vs 2 byte). Very spurious results with iOS and OBD Fusion.

Thanks everyone for all the help. I got OBD Fusion with user PIDs working on Dad's iPad to log. One of the PIDs that's missing is $199D. I added that but don't know how to interpret the results. I...

Tom, Thank you! Not sure what my dad's truck is doing with respect to desired idle vs. actual so this will be extremely helpful. It's on a 2005 P59 PCM, but I am hoping that the protocol/enhanced PID...

How are the values for 1192 interpreted? The tables shows that it returns 1 byte, but the description says that it ranges from 0-3200. Maybe a 12.5 times the byte value?