micktheturbo on ebay from around £200,if you want a new one they are £670 plus vat its acommon fault on jag x type diesels and later fords only an idiot would put a delicate electonic component over the exhaust manifold.but before you go down this line check out and clean the egr valve.

There are plenty of people on ebay offering good deals on turbo units.To clean the EGR you must remove it and chip all the carbon of it takes about an hour easy job,Its situated on the front left jand side of the engine at the top.