My fusion lost power and powertrain warning light came on. After 5 minutes i restarted and car drove ok but same thing happened. Its a 1.6 petrol with manual box. Scanned for errors and found u0166 which is something to do with auxiliary heater connection. Can anyone suggest where the problem could be coming from? Has this error got anything to do with the loss of power? I have had this car from new since 2008 and it has 49000 kms, regularily serviced. Car runs fine and no noises from either engine or gearbox. Thanks for your time.