The role of the oil pressure sensor is to monitor the oil pressure of the automobile engine and pass this information to the engine control unit. The engine control unit controls the operation of the oil pump according to the oil pressure signal received, thus ensuring the normal operation of the engine. If the oil pressure is too low, the engine control unit will adjust the operation of the oil pump to return the oil pressure to the normal range. If the oil pressure is too high, the engine control unit will adjust the operation of the oil pump to prevent overheating or damage to the engine.

The oil pressure sensor can detect the working condition of the engine by measuring the oil pressure. It is usually installed in the lubrication system of the engine and connected to the oil pump. When the engine is working, the oil pressure sensor will feel the pressure of the oil and convert it into an electrical signal to pass to the engine control unit. The engine control unit determines whether the oil pressure is normal according to the electrical signal received, and takes corresponding measures to adjust the operation of the oil pump.

When testing the oil pressure sensor, professional diagnostic tools can be used to check whether the sensor is working properly. The diagnostic tool can read the signal from the sensor through the interface connected to the sensor and the engine control unit and detect whether the sensor is correctly detecting the oil pressure. If there is a problem with the sensor, the diagnostic tool will display the corresponding fault code so that the maintenance personnel can quickly determine the cause of the problem and take appropriate measures to fix it.