What to know about the Refrigerant Pressure Sensor (Switch):
The air conditioning system is pressurized with a gas known as a refrigerant. The refrigerant moves through the lines in the air conditioning system to remove heat and moisture from the interior of your vehicle. It distributes it via the condenser by the radiator, which empties the heat into the air. The refrigerant is pressurized in the air conditioning system to work correctly, and it is observed by the refrigerant pressure sensor. This switch, located in a refrigerant line by the firewall, is constructed to assess how much pressure is being used in the AC system. If there is too little pressure, then a leak has most possibly occurred and the AC system is at risk. If the pressure sensor fails, it can look like the symptoms of a refrigerant leak. Your air conditioning may take a long time to cool down or it may not cool at all.
Facts to Note:
AC systems are complex. If you’re having issues, it may not necessarily be the refrigerant pressure sensor.
Air conditioning refrigerant is a controlled substance and can only be handled by licensed individuals in many areas in the United States.
How to Fix:
The A/C refrigerant is taken out from the system
The defective refrigerant pressure sensor is removed
The new refrigerant pressure sensor is fixed
The A/C system is evacuated and refilled with refrigerant
The vehicle A/C is tested for proper operation and temperature output
The refrigerant pressure sensor does not need service or maintenance. It would be a good idea to have its operation checked when any air conditioning work is carried out. If there is a problem with the pressure sensor, have it changed by one of your expert mechanics; after that is completed, the air conditioning system will be refilled with refrigerant.
Common symptoms indicating you may need to change the Refrigerant Pressure Sensor (Switch):
No cold air generated by AC system
Long time for the AC unit to cool the car
Metallic sounds or high-pitched noises that sound like air is leaving a tight space
Importance of this service:
Air conditioning is a convenience feature, and as such doesn’t present a safety concern if dysfunctional. However, you will be more comfortable in your vehicle if you have a faulty refrigerant pressure sensor changed.