Why does the engine coolant light appear on a cold start only for a 14 mile or so?

I am having sort of the same problem. My coolant light comes on after I've been driving for a while or if my car has been idling. I have checked all of my fluids and the car doesn't seem to be over heating or running hot. Any suggestions on what might cause this? My dad seems to think there is a short in the wire or the sending unit.

The low coolant sensor is a poor design and prone to failure. Get this - you have to buy the bottle to replace it, as the sensor cannot be purchased separately. The good news is, just unplug it. The light will go out and no codes will be generated. Just check your coolant level from time to time, like we all should do anyways when we check other fluids.