Hello,
It seems I have the same OR similar problem... In my '99 LR Disco td5 the Engine ECO sees that the the gearbox is in "Low Range" while the Gearbox ECU recognizes it correctly as "High Range".
I have 30 sec. to 100 km/h (60 mph). I can not go faster than 125 km/h (~70 mph).
All engine...