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International Automotive Technicians Network
Re: Engine Oil Pressure Stuck at 50 PSI
Posted to HD/Fleet Forum on 4/16/2020

Ok, here's a generic overview of the oil pressure sensor operation (or most any 2-wire sensor). The ECM supplies a reference voltage on the signal wire -typically 5V- and monitors that voltage level. The sensor is a variable resistance device that "pulls" the... Login to read more.