Don’t Fear the Check Engine Light

Check Engine Light

Take your vehicle to Christian Brothers Automotive when your vehicle’s check engine light goes on. Here are some of the most common reasons the check engine light turns on.

Fuel system Issues

Issues with your fuel system are probably the most common reason why your check engine light is staring at you. There are two main things that can trigger this and are often overlooked.

Faulty Gas cap

You wouldn’t think a gas cap would be that important, but it is. When it’s loose or cracked, fuel vapors leak out and can throw the whole fuel system off. This causes a reduction in gas mileage and increases emissions.

MAF sensor

Mass airflow sensors are a common item to go bad. A MAF sensor sits near the engine and reads how much oxygen is being let into your engine along with gasoline. There is a certain level of oxygen the engine requires to run efficiently and stay safe. When the MAF sensor goes out your car no longer reads these important levels. This is a simple fix that requires only a replacement of that sensor in your vehicle.

O2 Sensor

An O2 sensor’s job is to track the amount of oxygen used in the combustion process. When O2 sensors go out, a vehicle’s gas mileage decreases.

Exhaust problems

Catalytic converter

A catalytic converter takes dangerous gases your vehicle produces and makes them less harmful. If your catalytic converter fails, you are putting yourself and the environment in danger of high output of carbon monoxide and other harmful gases.

Faulty Ignition

Spark plugs or spark plug wires often are a cause for many sputters, and hesitation issues one feels when driving.

The spark plug seals the combustion chamber and provides a gap for a spark to jump across and start the combustion process inside your engine. When the plugs are failing, the spark plugs misfire. You’ll feel a little jolt in your car’s acceleration when this happens.

The good news is that this is an inexpensive and easy fix. Simply replacing the plugs fixes the issue and leaves your vehicle ready for another 30,000 miles of ignition excellence.

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