Hi, hope someone can help me. I have an audi A3 2 litre petrol on a 53 plate model. The engine fan is coming on at a high speed and appears to be doing so when the engine is very hot as opposed to coming on before it gets too hot. I have had the car 3 years and the temperature gauge has always been on 90, never going under or over even now. I have put a code reader metre on it and the following code is coming up 18068. Has anyone any ideas what could be the problem.
Ali

 

make sure you have the right amount of oil in the engine and coolant then check your thermostat if it is defective

 

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