On G cars from the 80s, low voltage list the oil pressure light. There have been many improvements since. May still need some.
Low oil pressure
That light is for low oil pressure, not low level.
why does oil light come on Oil level is low, pressure is low do to plugged filter or worn engine, or sensor is bad.
Oil light senses oil pressure not oil level
The oil pressure is low or the sensor has failed.
The light is not a low oil light, it is a low oil pressure light. Yes, a weak pump will cause this. Also a bad oil pressure sending unit can cause this.
Low oil pressure, Failed oil pressure sensor.
Bad sending unit, low oil, low oil pressure.
Oil level or pressure will not trip a check engine light.
No, it would cause the "low oil" light to come on.
No, a loose gas cap can cause the check engine light to come on but not the low fuel light.
Using 5W-30 oil in summer, my Catera's low oil pressure warning and light will come on when the engine is hot. But with 10W-40 oil this condition will not occur. Oil pressure gauge may indicate low pressure, but not enough to trigger the warning or the light.