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The air conditioning system is pressurized with a gas known as a refrigerant. The refrigerant flows through the lines in the air conditioning system to remove heat and moisture from the interior of your vehicle. It circulates it through the condenser by the radiator, which disperses the heat into the air. The refrigerant is pressurized in the air conditioning system to operate properly, and it is monitored by the refrigerant pressure sensor. This switch, located in a refrigerant line by the firewall, is designed to assess how much pressure is being used in the AC system. If there is too little pressure, then a leak has most likely occurred and the AC system is at risk. If the pressure sensor fails, it can mimic the symptoms of a refrigerant leak. Your air conditioning may take a long time to cool down or it may not cool at all.
The refrigerant pressure sensor does not require service or maintenance. It would be a good idea to have its operation checked when any air conditioning work is performed. If there is a problem with the pressure sensor, have it replaced by one of our expert mechanics; after that is completed, the air conditioning system will be recharged with refrigerant.
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 replaced.