2.5TDI Cab engine and ABS faults

[20vcqdriver]

Anyone with VCDS had an engine 'Intake manifold flap fault' And 'Rear ABS sensor' fault at same time? ABS issue been interrmittent for a while but now on permanently.
Have this on the cab and so checked rear sensor and found nothing wrong using my fluke scope meter and also changed the intake flap motor at great expense but both faults returned at same time 10 minutes after clearing the fault codes so suspect there is another issue thats throwing up these 'red herrings'. Any help appreciated Is there a fuse/ connector common to both these areas?

[yorkshiregit]

Sensors are normally looking at induction, do you have an LCR meter? A reader off eBay for the fault codes is under £20, get one which resets as well as reads

[20vcqdriver]

I have the full VCDS software and adapters. Will get some screen shots and put them up. Still not been able to eliminate as yet.... Not that I've had much time recently