The air flow sensor has not been replaced, genuine ford part and looks like it has been in there for quite some time...
We have compared figures to our little connect van and they are pretty much identical, ignition on, idle and full snap throttle!
Idle on van and mondeo 3.698khz
Ign on 775.6hz
full snap throttle 8.545khz
Live data on van is spot on and the vehicle drives okay.
Looking like its possible software fault within ECU..