Sometimes many car owners are negligent or even forget about the necessary maintenance. Nevertheless, the causes are sometimes due to minor issues, although there is also a possibility of rare and serious damage to the car.
Generally, there are several reasons that can cause the injection indicator light to come on in the car. Before discussing it in more detail, it is important to understand the function of the indicator light itself. Usually, this yellow indicator light will illuminate as an indication of an error located around the engine area.
The causes of the Injection Indicator Light Illuminating can technically be attributed to the failure of sensors in the engine area or damaged sockets or broken cables, preventing the Electronic Control Module (ECM) from reading the electrical flow. Consequently, the injection indicator light in the instrument cluster will light up yellow. The causes can be diverse, thus it is important to know several factors contributing to this.
Here are some factors that can cause the injection indicator light to come on:
1. Mass Air Flow:
In modern cars, checking can be done using a scanner to identify various issues within the vehicle, including problems with the mass air flow that may be dirty at times. The mass air flow serves as a measure of the amount of air flowing through the throttle valve, and injection-equipped cars rely on this tool. Issues usually arise when the mass air flow is damaged or when the circuit or cables become dirty. Cleaning it with a special mass air flow solution should be sufficient.
2. Manifold Absolute Pressure (MAP):
Another factor that can cause the injection indicator light to come on is the Manifold Absolute Pressure (MAP) sensor. This sensor measures the air pressure in the intake manifold or vacuum intake manifold, which usually regulates the ignition timing. This sensor may become damaged in some cars, leading to the illumination of the injection indicator light. If damaged, one way to solve it is by replacing the sensor.
3. Camshaft Position Sensor:
Another cause of the check engine light coming on is a faulty camshaft position sensor. This sensor determines the location of the 'top' in one of the cylinders, which is the position of the piston in one cylinder at the end of compression. The camshaft position sensor determines the 'top' in the first cylinder, and its data is crucial for the basic timing of the ignition system.
4. Oil Pressure Sensor:
This sensor works to detect the level of oil in the car's engine. The check engine light may also come on due to insufficient engine oil. When the oil level decreases, the oil pressure drops, and the sensor detects it. The engine will send a signal to the ECU automatically, causing the check engine light to come on. It is advised to check the condition of the engine oil and ensure there is no shortage. Another possible cause is dirty oil, which may affect the sensor's optimal performance. This usually occurs when the car owner surpasses the recommended oil change period.
5. Water Temperature Sensor:
Another factor that can cause the injection indicator light to come on is the water temperature sensor, also known as the engine coolant temperature sensor. Its function is to detect the temperature of the cooling water in the radiator. The sensor will send a signal to activate an extra fan to cool the radiator. In most cars, there are two water temperature sensors. Over time, the sensor will naturally degrade and must be replaced. A faulty sensor can disrupt the engine cooling system, leading to the engine overheating. Regular inspection of this sensor is recommended.
One of the solutions to address the injection indicator light coming on is to conduct a check using a scanner. This scanning tool is usually available at modern workshops to detect faults or damages. After scanning, several faults causing the indicator light to come on will be displayed. Sometimes, to address this issue, the fault can be cleared using the scanning tool. The ECU will be reset to read all the sensors properly. However, if there are more serious damages, it is advisable to perform a check using a scanner to accurately identify the cause of the check engine light coming on.
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