Oil Pressure Warning Lamp/Indicator: Description and Operation

With the ignition switch in ON or START, the oil pressure warning light will go on and, if equipped, the oil pressure gauge will show low oil pressure until the engine is started and normal oil pressure is obtained.

If the engine oil pressure falls below normal oil pressure and does not increase, the oil pressure switch will close and, if equipped, the oil pressure sending unit will decrease in resistance. The oil pressure warning light will go on and stay on and, if equipped, the oil pressure gauge will show low oil pressure.