The car with a screw light symbol, often referred to as the “check engine” light or “malfunction indicator lamp” (MIL), indicates that there is an issue with the vehicle’s engine or emissions system. This warning light can appear in various forms depending on the make and model of the car, but it usually resembles an engine or a car with a wrench.
Here are some reasons why this light might turn on:
Engine Issues: The light could indicate problems such as misfires, issues with the ignition system, or problems with fuel delivery.
Emissions System: It may indicate a failure in the emissions control system. This includes issues with components like the catalytic converter, oxygen sensors, or the exhaust gas recirculation (EGR) system.
Loose or Faulty Gas Cap: Sometimes, a loose or damaged gas cap can trigger the light, as it can cause fuel vapors to leak and lead to increased emissions.
Transmission Problems: In some cases, the light can indicate issues with the transmission or its related components.
Sensor Failures: Various sensors, such as mass airflow sensors or throttle position sensors, can fail, triggering the warning light.
When this light comes on, it’s important to take it seriously. It’s recommended to check the owner’s manual for specific meanings related to your vehicle and to have the car diagnosed by a mechanic as soon as possible to prevent further damage or costly repairs. Ignoring the warning can lead to more significant problems down the line.