it is threaded into the thermostate housing.
It means your coolant sensor is bad and needs replaced.
If you mean for Coolant level sensor it is on the bottom of the plastic coolant dish on the passenger side of the car.
The coolant temp sensor is located next to the thermostat housing.
In the expansion tank.
Which engine do you have?
Either your coolant is actually low or you have a coolant sensor bad.
It is located on the coolant reservoir. This part cost $70.00
It is located in the bottom of coolant bottle.
It is under the alternator
The coolant temperature sensor on a 1997 Lincoln Continental is located on top of the engine, near the upper radiator hose. It constantly relays the engine's temperature to the computer.
It is the two wire sensor next to the thermostat housing.