The oil pressure light stays on whenever the engine is running. The oil pressure has been checked and it meets specifications. Technician A says a short to ground in the circuit between the indicator light and the pressure switch could be the cause. Technician B says an open in the pressure switch could be the cause. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because a short to ground in the circuit would cause the oil pressure light to stay on continuously, even if the oil pressure is within specifications. An open in the pressure switch would likely cause the light to not come on at all, rather than stay on continuously.

The Oil Pressure Light Stays on Whenever the Engine Is