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The Check Engine light (CEL) is a dashboard warning light that illuminates on a vehicle’s dashboard when the vehicle’s on-board diagnostic (OBD) system detects an issue with the engine’s performance or emissions.

The OBD system, which is responsible for monitoring and regulating the engine’s performance, uses various sensors to continuously monitor and diagnose the engine’s operational functionality. If one or more of the sensors indicate that the engine is not performing optimally, the OBD system will trigger the Check Engine light.

What does the Check Engine Light Mean?

The Check Engine light can indicate anything from a minor issue to a serious problem that requires immediate attention. When the Check Engine light illuminates, it is crucial to take note of the nature of the problem and have it addressed by a certified mechanic immediately.

Some of the common reasons why the Check Engine light may turn on include:

• Loose or missing gas cap
• Bad spark plugs or wiring
• Catalytic converter failure
• Issues with oxygen sensors
• Malfunctioning Mass Airflow Sensor (MAF)
• Failing or faulty illuminated modules

What Should You Do When the Check Engine Light Comes On?

When the Check Engine light comes on, it is recommended that you take the following steps:

1. Check your gas cap: Before assuming the worst, check your gas cap to ensure it is tight and secure. Sometimes, a loose or missing gas cap can trigger the CEL.
2. Take note of the light: Observe the Check Engine Light to determine if it is flashing or remaining on. A flashing CEL can indicate a serious problem, while a solid light can indicate a minor issue.
3. Take your vehicle for diagnosis: If the Check Engine light remains on, take your vehicle to a certified mechanic for diagnosis and repair. The mechanic will use a vehicle diagnostic tool to identify the specific problem and perform the necessary repairs.

Can you Drive with a Check Engine Light On?

It is not recommended that you drive with the Check Engine light on as it can indicate serious issues that need immediate attention. Additionally, if the Check Engine light is on due to emission issues, you may not pass a mandatory vehicle inspection.

The Check Engine light is an important dashboard warning light that alerts drivers to potential issues with their vehicle’s engine functioning. When the Check Engine light illuminates, it is necessary to take note of the nature of the problem and consult a certified mechanic immediately for diagnosis and repairs.

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