same problems read bottom and is what sorted mine today
I have a 2011 Mondeo 1.8 TDCI 125BHP Zetec with 98,000 miles and full dealer service history.
The car is perfect except for a reoccuring problem.
Without warning, and for no apparent reason, the ESP light comes on and this is usually followed with engine malfunction and the car going into limp home mode.
It has happened about 7 or 8 times .
I have had a diagnostics which reveals U0001 (High speed CAN loss communication BUS) and U0415 (invalid data received from ABS)
The fault has occured lots times
The fault also has varying degrees of severity - sometimes the ESP light comes on and stays on and thats it - sometimes the ESP light is followed by the engine malfunction and going into limp home mode - sometimes the ESP light is followed by engine malfunction AND every light is flashing - sometimes the EML is left on and other times nothing. The fault resets after turning the car off for a minute and restarting.
Anybody with any ideas or experienced a similar faulty
The fault usually occurs at 20-40MPH and at low revs -
sometimes after it warms up it runs fine

been into garages lots of different suggestions but all seem wrong even told it was injectors at 1 point and i took me car back off em after trying to tell me it would take half a day to get injectors out and then send em off and another day to fit ,
so car chugged back home to drive 20 minutes later all injectors out and day after tested for under a £100 to be told injectors are all good{hey all resett now so money well spent and piece of mind garage says get them in and bring it up and we will diagnose it they did and told me it was a switch on the pump and it only around £80 and now it sorted
this is a belter of a garage service i would highly recommend as from start to finish they went straight to the fault and sorted it unlike the cowboys garages telling me i need a new fuel pump/injectors
im not sure if i can name the garage here but will reply to email if any1 needing the garage init is located in L407SD BURSCOUGH/ORMSKIRK
{FUEL PRESSURE SENSORS }and all good and running great -hope this will help others in same boat