hi,

so i had the the below error for a long time, i changed throttle body but that was the wrong part, (a4 b8)

7859 - Intake Manifold Flap Position Sensor (Bank 1)
P2015 00 [039] - Implausible Signal
Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1

solved the problem today was a easy fix, not to sure how long it will last, for the p2015 it is the v157 motor that relates to the error code, which is found on the back of the intake manifold if you look at the attached
pictures the black link shown by the red arrow moves out of place towards the yellow highlighted part in the picture, due to this the intake flap dont function correctly hence the error code
all that needs to be done is to spray a bit of WD40 to the parts and get a long nose pliers and push the black link i the direction shown in green so that it looks like this (the final picture attached) the error will be gone

hope this helps

thanks
Danny.

final.jpgjgreen.jpgb