Have you ever experienced the low oil pressure light turning on when you apply the brakes? If your dashboard’s engine light comes on when you apply the brakes, something is likely causing low oil pressure in the engine.
Low oil pressure can be due to a bad oil filter or a leak in the engine. An oil pump malfunction or low engine oil may also bring on this problem. Engine light might also turn on if the engine’s sensors are malfunctioning,
This article will cover the potential causes of the oil pressure light turning on in detail.
- 1 Why does the oil light come on when braking?
- 2 Causes of oil light coming on when braking
- 3 What to Do If the oil light comes on when braking
- 4 FAQs on Oil Light Comes On When Braking
- 5 Conclusion
Why does the oil light come on when braking?
Low oil pressure in the engine is the main cause of the engine light coming on when the brakes are applied. The normal oil pressure in the engine drops as the RPM goes down.
Every 1000 RPM, the oil pressure drops by 10 psi. When the brakes are applied, the oil pressure drops even more. If the oil pressure sensor can register the pressure properly, the readings may be accurate, and the oil light will come up.
Causes of oil light coming on when braking
1. Old oil
Due to dirt and debris, engine oil becomes clogged over time as it ages. As a result, oil’s ability to lubricate machinery may be diminished. A low oil pressure warning may appear when applying the car’s brakes.
2. Dirty oil filter
The oil filter is in charge of keeping the oil clean from external contaminants. When changing the oil, the filter should be cleaned regularly. The oil filter will become clogged and no longer function properly. As a result, the engine will have low oil pressure, and the oil light will be on.
3. Low oil level
If the oil level in the engine is below the minimum, the oil light will most likely illuminate when the brakes are applied. Engine leaks could cause a low oil level. This will result in a lack of lubrication and low oil pressure in the engine. It is best to add the oil as soon as possible and check for engine leaks.
This is one of the most important factors for low-pressure oil even at idle and any other oil light issues you might have in your vehicle. Low oil creates a lot of issues, and you should fix this ASAP.
4. Faulty oil pressure sensor
The oil sensor is in charge of providing oil pressure readings in the engine. Oil pressure sensors can fail due to a wiring issue or improper plugging. When applying the brakes, a bad oil pressure sensor may be a little late registering the oil pressure. As a result, the oil pressure sensor will misread the oil pressure.
5. Faulty oil pump
The oil pump is in charge of distributing oil throughout the engine. Oil pumps can fail as a result of engine heating and friction. This will hinder the oil lubrication of all the parts of the engine. As a result, the oil light will come on when the brakes are applied. If you see a light blinking even when the oil is full, this is one of the reasons for that.
What to Do If the oil light comes on when braking
1. Replace the oil pressure sensor
If you suspect your oil pressure sensor is faulty, you can check the engine oil level. If the oil is new, the oil level is correct, and the oil pump is operational, the oil pressure sensor is likely malfunctioning. The cost of replacing the oil pressure sensor ranges between $100 and $130.
2. Get the Oil pump repaired
If you suspect the oil pump is malfunctioning, have it repaired. Overheating and cranking sounds are common signs that an oil pump is failing. Repairing an oil pump can cost between $400 and $500.
3. Maintaining Engine Oil
Your engine must be properly lubricated. Ensure that the oil level in the engine is between the MIN and MAX points. You can check the oil level with the dipstick in the engine. Add more oil if the oil level falls below the MIN point or you don’t see oil on the dipstick.
It is best to change the engine oil every 7500 to 10000 miles. The oil filter should also be cleaned or replaced to avoid external contaminants.
FAQs on Oil Light Comes On When Braking
The oil pressure rises and falls in proportion to the RPM. As the car slows down, the engine parts' required oil tends to decrease. This will result in a drop in oil pressure. However, the engine light will turn on if there is low oil pressure or a faulty oil pressure sensor. As the car accelerates, the oil pressure sensor returns to normal, and the engine light goes off.
No, driving with low oil pressure in the car is not recommended. Low oil pressure indicates that the engine parts are not properly lubricated. This causes overheating and friction, leading to premature wear and tear in engine parts.
If this is the case, it's probably because of a faulty oil pressure sensor. Usually, the cause of low oil light, in any case, is low engine oil. If the problem persists, there might be some dirt and other particles stuck during the oil change that interfere with the readings.
To sum it up, you should pay attention when the engine oil light turns on. It is normal for oil pressure to fall when the brakes are applied. However, if the oil light flashes, it may indicate that something is causing low oil pressure in the engine.
Marc is a Young mechanic working full-time in a big garage in Texas. He’s graduated and is well educated in the automobile industry and aims to open his own shop someday for his clients.