What is a cooling fan 1 control circuit?
Diagnostic Trouble Code (DTC) P0480 stands for “Fan 1 Control Circuit.” The engine cooling fan system is controlled and monitored by your vehicle’s computer and various sensors. The PCM detects the temperature increase through the coolant temperature sensor.
What does trouble code P0480 mean?
Cooling Fan 1 Control Circuit Malfunction
Diagnostic Trouble Code P0480 is defined as Cooling Fan 1 Control Circuit Malfunction. It indicates that PCM has detected an incorrect amount of voltage (high or low) in the electric cooling fan control circuit.
What is a fan control circuit?
Abstract: A linear circuit measures temperature and controls the speed of a cooling fan by generating a variable supply voltage for the fan. Fan-control circuits range from simple switches that boost the fan speed at a certain temperature, to digitally controlled fans with continuously-variable speed.
What happens if your AC fan control module is bad?
If the cooling fans are not coming on at all, then this may also be a sign that the fan control module is damaged. Without the cooling fans running properly, you will be at risk of having the car overheat. Running a car hot for a long period of time can lead to other damages like a blown head gasket. 3. Weakened air flow
What happens when the relay on a cooling fan fails?
The engine may also run hot and overheat, too. The typical electric cooling fan circuit includes a temperature sensor, a relay, a control module and the fan motor. The relay is the component that fails most often; so be sure to test the relay as well as its power supply and ground connections.
Why are my cooling fans not coming on?
Cooling fans not running at all If the cooling fans are not coming on at all, then this may also be a sign that the fan control module is damaged. Without the cooling fans running properly, you will be at risk of having the car overheat. Running a car hot for a long period of time can lead to other damages like a blown head gasket. 3.
What are the symptoms of a bad AC fan?
Symptoms of a Bad or Failing AC Fan Control Module. Common signs include cooling fans running for a long time or not at all, as well as weakened air flow. Without fixing, your car may overheat.