I have just recently ran into an issue with my 2015 bluehdi feel, where if i turn on the air conditioning and turn the fan speed up the engine fan kicks and an the display shows an engine fualt and the service light stays on. When the A/C is off and no fan speen selected the car runs fine but as soon as its on within 10 seconds the cooling fan starts up and the display shows an engine fault. Has anyone encountered this issue before and know a remedy? The car is booked for a service in a few days but would rather avoid taking it in if needed.