What Is the Check Engine Light Telling You?

The “check engine” light is one of the most dreaded instrument cluster warnings, if not for the simple reason that it can indicate any number of different vehicle problems. When you see this light come on, it means there’s been some kind of error in the engine control system. Figuring out what’s causing the check engine light can be difficult on your own, which is why drivers are advised to visit an auto repair shop in Silver Spring, MD so a technician can use advanced diagnostics equipment to determine the underlying issue causing the check engine light. In the meantime, here’s a look at some of the most likely issues your check engine light is warning you about.

Faulty Oxygen Sensor

The oxygen sensor in the engine monitors the amount of unburned oxygen in the exhaust. A faulty sensor doesn’t provide the right data to the computer, which can trigger the check engine light warning. A faulty oxygen sensor is most typically due to the buildup of oil ash over time.

Old Spark Plugs

Old, faulty spark plugs can also be to blame for your check engine light. Spark plugs are critical to the combustion process inside the engine. When the plugs are failing, the engine will misfire and can result in a check engine light warning. If you experience delayed acceleration and a decrease in gas mileage, bring your car to a mechanic and ask him to inspect the spark plugs.

Malfunctioning Catalytic Convertor

Faulty oxygen sensors and failing spark plugs can also contribute to problems with the catalytic converter, which can also trigger the check engine light warning. When the catalytic converter starts to fail, it stops converting carbon monoxide into less harmful emissions. That’s why cars with bad catalytic converters are not allowed to pass emissions testing.

These are just a few of the issues that could be causing your car’s check engine light to come on. If you’ve been staring at a check engine light and wondering what’s wrong with your vehicle, bring your car to Murray’s Auto Clinics in Silver Spring, MD. Our technicians use state-of-the-art automotive diagnostics equipment to pinpoint the issue and fix whatever is causing the check engine warning. To schedule an automotive diagnostic service, call us at 301-585-7557.