499000-7941 Auto Parts Sensor

   The function of the oil pressure sensor is to report the pressure of the main oil passage of the engine oil to the ECU. When the oil pressure is lower than the expected value, the ECU will enable the protection function of reducing the engine speed and power to adjust the engine speed and power. When it is detected that the oil pressure exceeds the specified range, the ECU will make the red alarm light on the instrument panel flash and send an alarm signal to the driver. Some engines or cars may also be accompanied by a buzzer. If the ECU is equipped with shutdown protection function, the engine will stop automatically when the oil pressure is lower than the limit value of 305. Some systems may also be equipped with manual delay button. After pressing this button, the running time of the engine will be extended by 305, so that the driver can park the car safely on the roadside

  How to detect the oil pressure sensor? Introduction to the detection method: turn on the ignition switch, but do not start the friendly motor, unplug the plug of the oil pressure sensor, and use a multimeter to detect the resistance value between the plug of the oil pressure sensor and the grounding wire. After the engine is started and the oil pressure reaches more than 20KPa, the resistance value shall be measured. The resistance strain is small, otherwise it indicates that the sensor has been damaged and should be replaced。