GM-GMC: 2001 Buick Park Ave electric cooling fan, buick park ave, electric cooling fan

Question
Hi - my cooling fans stay on all the time, and i get a service code "coolant temp too low".  Why does the fan stay on all the time?  Is there an electric thermostat to cycle it or is it controlled by the computer?  The temperature readout shows it hovering around 150-160, normal is 180-190.  Thanks!

Answer
well its because of the fan running all the time.. stop the fan from running all the time i do not know that is probably easy to replace the fan and the fan motor or it is possibly the thermostat is reading that the temp is high causing the fan to run and cool it down but the thermostat doesnt read it