The wiring method of the electronic oil pressure sensor is exactly the same as that of the traditional mechanical sensor. It can replace the mechanical pressure sensor and directly connect with the automobile oil pressure indicator and the low pressure warning light to indicate the oil pressure of the diesel engine engine and provide a low pressure warning signal. Compared with the traditional piezoresistive oil pressure sensor, the electronic automobile oil pressure sensor has the advantages of no mechanical moving parts (ie no contact), high precision, high reliability, long life, etc., and meets the requirements of the development of automobile electronics.