The A/C pressure sensor is a critical component in a car's air conditioning system. It plays a vital role in monitoring and maintaining the correct refrigerant pressure within the system to ensure efficient cooling, protect the compressor, and prevent damage to the A/C components. This article explores in detail what an A/C pressure sensor does, how it works, its types, symptoms of failure, troubleshooting, and replacement procedures. Throughout, we will provide a comprehensive explanation to help you understand the importance of this small yet essential sensor.