The oil pressure sensor, often referred to as the oil pressure sender, is a unit responsible for telling a vehicle’s computer the oil pressure. It controls the gauge on a vehicle, which lights up as a warning indicator. This signals that the automobile’s engine is receiving too little oil pressure or the sending unit is faulty. Low oil pressure could mean that not enough oil is present and can be easily fixed with additional oil. It might also indicate that the engine is burning oil or that an oil leak exists. If the sensor, or sending unit as some call it, is to blame, it can be easily tested.
Insert the key into the ignition, and turn the key to the accessory setting. The engine should not be running.