I'm not too good when it comes to sensors but my '01 WJ keeps telling me that I have low coolant, which I don't. I'm guessing a sensor is shot? If it is a sensor, is it hard to replace? Cost? I appreciate the advice.
There is a level sensor mounted in the top part of the coolant recovery tank. My jeep doesn´t have it, but seems to be easy to change. I would start cleaning the connector and if that doesn´t help, you could remove it to see if its not sticking.