What are the symptoms of a faulty car air conditioning pressure sensor?
2 Answers
Car air conditioning pressure sensor failure symptoms are caused by poor contact of the contacts or abnormal operation of the pressure switch, resulting in the compressor not working or failing to provide normal pressure protection. The following is a detailed introduction to the air conditioning pressure sensor: 1. Concept: The pressure sensor is a device installed on the pipeline of the outdoor unit of the air conditioner to detect pressure. It transmits the pressure detection results to the computer board to control other components of the air conditioner. 2. Causes of failure: Clogged filters, damaged or worn internal parts, expansion valve failure, etc., can all lead to damage to the car air conditioning pressure sensor.
As a seasoned driver with years of experience, I once encountered an issue with the air conditioning pressure sensor. The symptoms were quite obvious: the AC would blow hot air instead of cold, the compressor wouldn't start or would randomly shut off, and a warning light (like a small triangle) might appear on the dashboard while driving. Additionally, the system might cycle on and off frequently, and adjusting the temperature would have no effect—making driving on hot days downright miserable. I tried checking it myself, but with a faulty sensor, the entire refrigeration cycle is affected, and it could even damage other components. My advice is to get it diagnosed by a professional repair shop as soon as you notice the issue—don’t wait until it completely fails, as repairs could get more expensive. During regular maintenance, pay extra attention to the AC’s performance, like testing it in AUTO mode—prevention is always better than cure.
