Hi

I have a cheap O ODB bluetooth unit connected to my android phone - bargain, it works well, cost £8

was just wandering what "accelerator Pedal D" sensor is
does anyone know?

thanks 

does this help?

Accelerator Pedal Position D – The minimum opening usually about 5% above minimum.
Accelerator Pedal Position E – Similarly, the maximum position usually about 5% below maximum.

xtd5

thanks

so If I monitor live data for Position D, should it be flatlined whilst the pedal is not depressed, or should it vary 0-10%?

do you know? 

I am not an expert in this item, but from an electronics engineer perspective. The sensor should be stable (flatline) unless you are changing the pedal depression.
Take a look at the YouTube video https://www.youtube.com/watch?v=_skVHdgtMTU. at time 4.11 you can see he connects voltmeter to the sensor on his vehicle at rest and it is stable.
Hope this helps
Nigel