Could someone please help me with the location of this item on 2.0 diesel 170bhp engine. Thank you.

Random spray of pictures, hopefully someone can chime in and say which of these pictures contains it...

 

Assuming that's the CFGB engine, the control solenoid is the arrow in part II of the diagram below.  Could the sensor be part of the valve?

 

Perhaps someone can point out which bit it is in this diagram.  I'm guessing it's the grey thingo with the plug above the snail but I don't actually know...

 

Then this one talks about position sender (2):

You haven't said what engine code, so it's hard to be specific, but it sounds like you're looking for the MAP sensor. It will be somewhere along the intake piping between the intercooler and turbo. It should look something like this: