Few things in life are as cryptic as the dreaded “check engine light,” the glowing warning sign that pops up on our vehicle’s dashboard and could be any number of terrifying ailments – or just an issue with the car’s computer. Here are a few reasons why your car may be displaying its check engine light.
Your engine will use extra fuel and potentially damage your catalytic converter and spark plugs if you don’t replace a faulty O2 sensor, which measures the oxygen in your vehicle’s exhaust system.
Mass Airflow Sensor
This sensor measures the amount of air entering the engine and determines how much fuel to use. If this needs to be replaced, it could damage the oxygen sensor and catalytic converter.
A malfunctioning catalytic converter can cause the check engine light to come on. Usually caused by neglected maintenance, damage to your catalytic converter results in more carbon monoxide emissions and poor fuel economy.
Your spark plugs may need to be replaced, or there could be an issue with your plug wires. This can cause reduced performance or clog your catalytic converter.
If broken, missing, or loose, the check engine light may come on for a simple gas cap.