If your check engine light flashes on, it’s best to get to the shop for diagnostics ASAP. This will give you the best chance to address the underlying issue before it escalates and potentially leaves you stranded and in need of more costly repairs. At Integrity Auto Care, we provide expert check engine light diagnostics and repair in the greater South Beloit, IL area. Here are five common reasons the check engine light turns on.

Failing Catalytic Converter

A deteriorating catalytic converter can trigger the check engine light. Your catalytic converter reduces harmful emissions by turning pollutants into less harmful substances. Ignoring this warning can lead to poor engine performance, reduced fuel-efficiency, and costlier repairs.

Faulty Oxygen Sensor

One of the leading causes of an illuminated check engine light is a malfunctioning oxygen sensor. Responsible for monitoring the level of oxygen in the exhaust gasses, a faulty sensor can lead to decreased fuel efficiency and increased emissions. Disregarding this issue may result in problems with your vehicle's catalytic converter.

Loose/Missing/Damage Gas Cap

It might sound like something insignificant, but a loose or damaged gas cap is a surprisingly common reason for the check engine light to illuminate. The gas cap seals the fuel system and maintains pressure, and when it fails to do so, it can trigger the light. 

Faulty Mass Airflow Sensor

The mass airflow sensor measures the amount of air entering the engine, aiding in proper fuel injection. When this sensor malfunctions, it can lead to poor fuel efficiency, rough idling, and an illuminated check engine light. 

Issues with Spark Plugs and Ignition Coils

Worn-out or faulty spark plugs and ignition coils can disrupt the combustion process, leading to misfires and difficulty starting your vehicle. These problems can result in an illuminated check engine light, and addressing them promptly is important for engine performance.

Check Engine Light Repair in South Beloit, IL

When you need check engine light repair in South Beloit and the surrounding area, contact Integrity Auto Care at (815) 957-4159. Feel free to give us a call today to make an appointment!