We have a Fiat Ducato Motorhome that has an engine management light on in the dash, the vehicle now has loss of power. We have put our machine on this and it shows a fault Code P2563. We can turn the engine management light off, but as soon as we start driving the vehicle it returns and so does the lack of power. Can anyone advise what this fault code means?

There's a thread with this fault code here: https://www.fiatforum.com/ducato/331754-p2563-turbo-position-sensor.html

Looks as though it could be expensive unless your van's under warranty.
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