Chassis Fault G05

[1989964]

I have a chassis fault in my 2019 G05, implausible height signal at the back, both rear ride heights are reading at 3375mm in the VDP. As per measures plan, I have attempted to write the correct values into the VDP using ista but weirdly only the front vales are being written. I have checked the voltage at the sensors, they are reading between .5 and 5 volts. I have replaced the car battery. I have flashed the EHC and the VDP, no difference. I bought a second hand VDP from G05 and plausible values were in it, however when i went to learn in the correct values the VDP showed the same charecteristics as the original, ie the values for the front were stored but the rear values went to 3375. does anyone have a pointer for me?
thanks

[1989964]

well no replies but i thought id let people know the answer. The cars trailing arms at the rear were bent when the car was transported and tied down incorrectly. This meant the sensors were indeed sending an implausible signal. I managed to figure it out when the car was on ramps during an mot. The car was working as intended at all times and flagged the signal as implausible.