When the check engine light comes on, it’s your vehicle’s way of telling you that something needs attention. While it doesn’t always mean there’s a serious problem, ignoring the warning can lead to more costly repairs down the road. The light can be triggered by a wide range of issues, from minor problems to significant mechanical failures. At East Windsor Auto, we provide expert check engine light diagnostics and repair in the greater East Windsor, CT area. Here are four common reasons why the check engine light might illuminate.

Faulty Oxygen Sensor

The oxygen sensor monitors how much unburned oxygen is in your car’s exhaust and helps regulate the air-to-fuel ratio. When this sensor begins to fail, your engine may burn more fuel than necessary, leading to reduced fuel-economy and increased emissions. A faulty oxygen sensor is unlikely to cause an immediate breakdown, but ignoring it can cause problems with your catalytic converter over time, which is a much more expensive repair.

Malfunctioning Spark Plugs or Ignition Coils

Spark plugs and ignition coils play a critical role in engine performance by igniting the air-fuel mixture in the combustion chamber. If they are worn out or malfunctioning, the engine may misfire, run rough, or have difficulty starting. These issues can trigger the check engine light and lead to reduced power and efficiency. Replacing faulty plugs or coils can often restore smooth performance.

Catalytic Converter Problems

The catalytic converter is responsible for reducing harmful emissions by converting exhaust gases into less toxic substances. If it fails, your car’s performance can suffer significantly. You may notice reduced acceleration, poor fuel-economy, or even the smell of sulfur. A failing catalytic converter is a serious issue and needs to be addressed promptly.

Mass Airflow Sensor Failure

The mass airflow sensor measures the amount of air entering the engine so that the computer can inject the proper amount of fuel. If this sensor isn’t working correctly, it can cause the engine to run too lean or too rich. This often leads to poor fuel economy, stalling, or rough idling. A faulty mass airflow commonly triggers the check engine light and should be addressed quickly to maintain proper engine function.

Check Engine Light Repair in East Windsor, CT

When you need auto repair in East Windsor and the surrounding area, contact East Windsor Auto at (860) 266-5573. At our nearby auto shop, we can expertly address your vehicle’s repair and maintenance needs. Feel free to give us a call to make an appointment!