5 Reasons Why Your Car, Truck, or SUV’s Check Engine Light Came On

The Check Engine light can raise your blood pressure and pulse quicker than anything. You’re driving along humming your favorite song and all of a sudden the apocalypse hits. Well, okay, that might be a little melodramatic but dashboard warnings lights are designed to warn you of impending doom. Eurozone Motors can find the reason why your check engine light came on. Here are five possibilities.

Oxygen Sensor

Located in your vehicle’s exhaust system, the oxygen sensor checks to see how much unburned oxygen your car, truck, or SUV has in its exhaust before it escapes through the pipe. The wrong mixture can signal a Check Engine light warning and cause your vehicle to fail its next smog check. What’s worse? A failing oxygen sensor can damage your catalytic converter or spark plugs.

Gas Cap

Huh? Well, it might sound a little silly but a loose gas cap can make your Check Engine light come on. The gas cap creates a vacuum seal and if that seal is broken, your vehicle’s onboard computer will get all bent out of shape. Once your Check Engine light comes on, pull over to a safe spot and check to make sure your gas cap is tight. If it is, something else is wrong.

Catalytic Converter

This problem is kind of close to an apocalypse. Your catalytic converter is another crucial part in your vehicle’s exhaust system and many a failing converter have caused smog check flunking all over California. Another sign aside from your Check Engine light is a nasty smell coming from your engine. Drivers with failing catalytic converters in the past have reported they smelled rotten eggs.

Mass Airflow Sensor

You Check Engine light might also come on if your mass airflow sensor isn’t working properly. Your car, truck, or SUV’s ignition system runs on a mixture of air and fuel and, you guessed it, the mass airflow sensor measures that air. The wrong mixture can cause your engine to sputter and stall, not start at all, or trigger a Check Engine light warning. 

Plugs and Wires

Finally, spark plugs and spark plug wires are also part of your vehicle’s ignition system and they wear down over time. In older vehicles, the plugs may wear down after 30,000 miles; today’s automobile can go much longer between plug changes. If you’ve noticed trouble with your vehicle’s performance, such as the sputtering and stalling mentioned above, the spark plugs and wires might be at fault.

Call Eurozone Motors in Los Angeles, CA, at 323-928-7393 to schedule a diagnostic check. We’ll find out why your Check Engine light came on.