Motor : 2007 W211 220CDI The MIL light has been coming and going for a while now with some temporary ( about 1-2 secs ) power loss whilst cruising. A read of the error codes gives P0183 - "Fuel Temperature Sensor A circuit high" To test this, I cleared the code to clear the MIL light, started the engine and no error codes appeared. I then unplugged the temp sensor, started up and again the P0183 is back. From looking at the service book the fuel filter hadn't been replaced ever ( no ticks in the boxes). So this was changed. Cutting open the old one showed a black sludge about 1mm deep on the dirty side of the filter, so obviously bad. Running the car again and the MIL light still appears, however the power dips don't seem to have come back. So I'm thinking of replacing the sensor, but where to get one from? EuroCarParts don't stock it and I don't want the MB premium. So, does anyone know where to get one? and Is this a known / common failure point or indicative of something else?