Hi mate,
If I recall there is a couple of sensors one will be on the side of the cylinder head gearbox side which is sensor 1 there is also a sensor at the bottom of the radiator sensor 2. The model was prone to the to sensor 2 letting water into the connector corroding the wiring and the terminals on the sensor. I would check sensor two 1st.
Might need to get reset it will think there has been a open circuit with the sensor. You could try disconnecting the battery and leaving it a while then reconnecting might reset it for you. Was the terminals ok in the multi plug? There were bad for corroding sometimes the pins from the sensor would break off and stay in the plug.
***Update**** replaced sensor under rad (Old one heavily corroded) and refilled with fresh coolant. No engine light
HOWEVER still no AC and NO fans work.
I believe I here a click from the relay, but the pulley air con thingy is'nt spinning. The sensor that I replaced under the rad what is that for...AC? or for when car over heats?
Thanks
My aircon fan doesn't spin ether witch relay would control it on a 08 type r