A Faulty Oil Pressure Sensor The most likely, and, fortunately, the least problematic reason that your oil light comes on when braking is due to a faulty oil pressure sensor. The oil pressure sensor works to keep track of the oil pressure in the vehicle and transmit this information back to the combination meter or instrument panel.

Why does my oil pressure drop when I hit the brakes?

If the oil level is low, the oil can shift away from the pickup under braking and cause the pressure indication to drop. It may not be the case, but check the oil level when the motor is cold then drive until you get the low oil pressure symptom then stop immediately and check the oil level.

Why does my low oil pressure light keep coming on and off?

Low oil pressure means the pump isn't circulating enough oil, or there isn't enough oil in the system for the pump to circulate. The oil is important to keeping the surfaces lubricated, so if the oil light comes on and the pressure is low, pull over and turn off the engine.

Why is my oil light on when my oil is full?

The dashboard oil light comes on when your engine suffers a drop in oil pressure. Without enough oil pressure, the engine can't lubricate itself. Continuous lubrication is necessary for the engine to run, so if it's not adequately lubricated it will seize, and it could stop abruptly, which could cause an accident.

Related Question oil pressure light comes on when braking

How long can you drive with oil pressure light on?

Generally speaking, you have about 2 weeks or 500 miles of driving before a flashing oil light turns into a legitimate problem. But once it hits that point, things can go downhill fast, leading to serious mechanical damage. So, try to get your vehicle into a mechanic sooner rather than later.

How do you fix low oil pressure warning light?

Can a dirty oil filter cause the oil light to come on?

The most common situations in which low engine oil causes the oil warning light to illuminate are unknown slow leaks in the oil system, an improperly replaced drain plug or oil filter and impacts to the oil pan from rocks or other road debris.

Why won't my oil light go off?

If your oil light stays on even after changing your engine oil, you're going to want to check the sensor first to rule out a malfunctioning sensor as the cause. The oil pump may not be circulating enough oil to keep the engine's parts lubricated and functioning properly, which can in turn cause multiple engine issues.

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