I have a recurring issue with my 55 plate Mondeo ST TDCI. Every now and then, typically when the engine is warm and/or when accelerating the car loses power and the glow plug warning light flashes. I then have to turn the ignition off and back on to make the car return to normal.
There are 2 logged fault codes:
- U1039 FORD Invalid or Missing Data for Primary Id Vehicle Speed
- P0406 Exhaust Gas Recirculation Sensor A Circuit High
Any suggestions what could be causing it?