Oxygen sensor failure and disruption:
One of the most common reasons for the car check light to turn on is the failure of the oxygen sensor. The cost of replacing the oxygen sensor is not very high and it can be replaced at a low cost. But the failure of the oxygen sensor can damage expensive parts such as the catalyst. On the other hand, it can disrupt the car's computer system and increase the car's fuel consumption.
Airflow sensor failure
Another thing that plays a role in turning on the check light is a problem with the air sensor. By checking the amount of air entering the engine, the air flow sensor sends the necessary information to the car's computer to determine the amount of fuel injected into the injectors by analyzing and summarizing the data.
Cracking and problem in the coil
The coil part is responsible for providing the electricity necessary for sparking in the spark plugs of the car. that the failure of the coil causes a disturbance in the ignition of the candles and the check light of the car turns on.
Disadvantage of candles and wires
The task of the spark plugs is to spark and explode the gasoline, and as a result, the car moves. When this process does not go ahead, there is no spark from the candles. Spark plugs and wires, which are among the car consumables, must be replaced within a certain period of time. If the wires are defective, it is not able to produce the electricity required by the candles and can damage the battery and coil.
Disadvantage or weakness of the vehicle's battery
Today, in many cars, turning on the dynamo light indicates a problem with the car's battery. And in cars that are normal and do not have high technology, the failure or the end of the battery life causes the check light to turn on.
The thermostat failure
The car thermostat is one of the busy parts in the car, which acts on the engine temperature regulation system. In order for the thermostat to work properly, the coolant or antifreeze must be replaced on time because this liquid loses its state over time.
Disruption in the fuel injector system
Problems in the injector system can also cause your car's check light to turn on. The problem in the injector system is not very common, but driving badly and driving a long distance with low fuel causes the injector system to fail, which has a high repair cost.
Incorrect installation of alarm
Sometimes, if the alarm system is not installed correctly, the car's check light will turn on. The car's computer recognizes the alarm system as a malicious agent and turns on the car's check light. And another one is the incorrect installation of the car's power theft alarm, which can lead to the emptying of the car's battery.
In some cases, it is possible that the car check light is on and the car is working properly, and this is nothing to worry about, and in this case, there is no disruption or damage to the car. And as we have explained, the most common signs of the check light being on are the oxygen sensor being damaged or the fuel tank cap being loose.
