Ford Focus 1.6 Titanium Diesel

[KieronSparkes]

Evening, I’m new to this forum. I’m a Apprentice PSV Mechanic, but I have a few projects, Cars, Buses, bikes ect. 
 

I bought a Ford Focus Diesel 1.6, but it came with a loss of power fault. I have no access to my Computer. Due to lending it to our other garage. But I’ve looked around, Either turbo or Boost Sensor problem. That’s what I’ve found this morning. 
 

do you have any suggestions on my next port of call? As soon as I get my computer back. The car will be put straight onto it. In the mean time. Anything I can look out for? 
 

cheers