Hello OKSid,
Yes I solved the problem by buying a new Mondeo diesel.
But seriously I sold my V6 to my son and he solved the problem. The error message indicates that the fuel is running very rich due to too much air entering the inlet. My son removed the flexible pipes connected to the inlet manifold and found a 3 inch axial split on the underside of the breather pipe from the back bank of cylinders to the manifold. I had checked this pipe, from above without removing it, and could see no problem! He replaced the rubber tube and problem was gone, fuel consumption back to normal, no error messages.
This was 2 1/2 years ago and still going well.
Hope that this helps,
Regards,
John