Why Is the Oil Pressure Light On in My Car? Common Causes and What to Do

Seeing the oil pressure light illuminated on your car’s dashboard is a cause for concern. This warning indicates that something is wrong with your engine’s oil pressure, which is vital for proper lubrication and the smooth functioning of engine parts. Ignoring the oil pressure light could lead to serious engine damage. So, why is the oil pressure light on, and what should you do next? In this article, we’ll explain the common causes of low or high oil pressure and guide you on how to respond.

What Does the Oil Pressure Light Mean?

The oil pressure light indicates that the oil pressure in your engine is either too low or too high. In most cases, low oil pressure is the culprit. Oil keeps the engine lubricated, cool, and free from excessive wear, so when the pressure drops, it can cause significant engine problems. If you see this warning light, it’s important to address it immediately to avoid costly repairs.

Common Causes of the Oil Pressure Light Turning On

Here are some of the most common reasons the oil pressure light might turn on:

Low Oil Levels

The most common cause of the oil pressure light coming on is low oil levels. If there isn’t enough oil circulating in the engine, the oil pressure will drop. This can happen if you’ve had an oil leak, haven’t changed your oil in a while, or simply didn’t fill it up enough after an oil change.

Check your oil level using the dipstick. If it’s low, top it up with the correct type of oil for your vehicle. If the oil level is fine but the light remains on, further investigation is needed.

Oil Pump Failure

The oil pump is responsible for circulating oil throughout the engine. If the oil pump is malfunctioning, it can’t maintain the proper oil pressure, triggering the oil pressure light. This is a serious issue because continued driving with a failing oil pump can cause severe engine damage.

If the oil level is adequate, but the light stays on, have your oil pump checked by a professional mechanic. Oil pump replacement can be costly, but it’s necessary to protect your engine.

Faulty Oil Pressure Sensor

The oil pressure sensor monitors the oil pressure and sends data to the vehicle’s computer. A malfunctioning sensor can give incorrect readings, which may cause the oil pressure light to turn on even if the oil pressure is fine. This could also be the result of dirt or wear over time.

If the oil level and pump are functioning properly, have the oil pressure sensor inspected and replaced if needed. This is usually a less expensive fix.

Clogged Oil Filter

A clogged oil filter can obstruct oil flow, causing the oil pressure to drop. If the oil filter is not allowing the oil to pass through smoothly, it can lead to reduced pressure in the system. Over time, debris and contaminants can build up, especially if you haven’t changed the oil filter for a while.

Replace the oil filter as part of a regular oil change. Make sure to replace it according to your manufacturer’s recommendations to keep oil circulating smoothly.

Incorrect Oil Viscosity

The thickness (viscosity) of the oil plays a role in maintaining oil pressure. If you use the wrong oil for your vehicle or if the oil becomes too thick in cold weather or too thin in hot weather, it can cause fluctuations in oil pressure. This issue can be more noticeable in older engines.

Check the oil type and ensure you’re using the recommended viscosity for your vehicle, especially if you’re experiencing extreme weather conditions. Changing the oil to the proper type can often resolve pressure issues.

Oil Leaks

Oil leaks can lead to a drop in oil levels, which, in turn, can cause low oil pressure. Leaks can occur in various places, including the oil pan, oil filter, or seals around the engine. If you notice oil spots under your car, this could indicate a leak.

Inspect your vehicle for signs of oil leaks. If you suspect a leak, take the car to a mechanic for a proper inspection and repair.

Oil Services & Leak Repair in Naperville, Illinois

The oil pressure light is a crucial warning that indicates something is wrong with your vehicle’s oil system. The most common causes include low oil levels, a faulty oil pump, or a malfunctioning oil pressure sensor, but it could also be related to a clogged filter, oil leaks, or engine wear. It’s important to address this issue quickly to avoid damaging your engine.

If you’re noticing an active oil pressure light on your dash, trust the experts at Becker Service Center to pinpoint the source of your issue and return your oil pressure to the proper level for healthy engine operation. Give us a call or schedule online today!