two engine codes of my ford focus - u0155 and p2584

Question

What do these relate to and how can i fix them

Answer 1

U0155 Lost communication with instrument panel

P2584 Fuel additive control system

Ford uses a smart junction fuse box, so does the window operate, radio operate, check the fuse replace any that is open if the instrument panel has no communication P2584 can be one of the results for this, check for any open fuse in the engine fuse box and under dash compartment.