Fault code P2263 Focus

The yellow engine light has come on in my 2004, 1.8 TDCI focus, a local garage ran a diagnostics test which says P2263-Turbocharger (TC) boost pressure/supercharger boost pressure performance problem-
mechanical problem-The vehicle performance is poor after 3000rpm- Any body any info as they can't resolve problem ?

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.