Car oil warning light is on - if ignored, it will be dangerous and unpredictable

Oil is responsible for lubricating the internal parts of the engine to reduce friction. The oil pressure sensor is responsible for determining the oil pressure of the engine and sending a signal to the ECU. From there, the ECU will determine the amount of oil in the engine, if there is a shortage, the warning light on the dashboard will turn on. Because this sensor is always exposed to high oil temperatures, it is quite susceptible to damage.

The oil pressure warning light is connected to the oil pressure sensor, so when the oil pressure sensor is damaged, it can transmit an incorrect signal to the ECU, at which point the engine control system may understand that the oil level is low and activate the warning light on the dashboard.

Once the oil light comes onThe car's oil check light is used to alert the user about the engine's lubrication status. So what causes the car's oil check light to come on?

The car's oil warning light comes on, warning that there is a problem with the engine.

Low ink viscosity sign

One of the reasons why the oil warning light is on is that the engine's lubricating oil level is low. Therefore, it is necessary to check it again with the dipstick, or some modern cars have an oil level checking function. If the light comes on during operation - this is a sign that the car is consuming too much oil and needs to be checked; because the lubrication status is extremely important for the engine. If not handled promptly, the engine will quickly break down, endangering safety when participating in traffic.

Signs of dirty lubricant

Another reason why the oil light comes on is because the oil inside the engine is dirty. Failure to perform regular maintenance to check and replace the lubricants when necessary will cause the oil and other fluids to deteriorate. Then, the sludge formed from the degraded oil will cause sensors such as the oil pressure to detect and illuminate the oil light.

Signs of low oil pressure

Low oil pressure is the case where the oil in the tank is still sufficient in quantity, but not of sufficient quality because the owner may not be using the right type of oil. This problem can occur in places where the temperature between the hot and cold seasons is large. When the outside temperature is high, use a high viscosity index, when the temperature is low, use a low viscosity index. That means in the summer, the car uses high Vicosity oil (10W - 30), but in the cold season, it must be changed to 5W-30 to be suitable. Otherwise, the engine will lack oil, the engine will make noise, and the bearings will wear out.

Signs of a faulty pressure sensor

Another reason for the oil warning light to come on on the dashboard is a faulty sensor. Normally, the oil pressure sensor is mounted on the side of the engine and is often exposed to dirt in the oil or high temperatures, so it can fail. However, sometimes the circuit of the warning light on the dashboard has problems.