If your check engine light comes on, it doesn’t necessarily mean that your engine is nearing disaster. Still, a big problem could be brewing and it’s best to promptly get to the shop for diagnostics. At Edmunds Automotive Repair, we provide expert check engine light diagnostics and repair in the greater Surprise, AZ area. Here are five common check engine light triggers.

Faulty Oxygen Sensor

A faulty oxygen sensor is a common reason the check engine light turns on. Responsible for measuring the amount of oxygen in the exhaust gasses, a faulty sensor can lead to decreased fuel-efficiency and increased emissions. 

Malfunctioning Mass Airflow Sensor 

The MAF sensor measures the amount of air entering the engine and helps determine the appropriate fuel-to-air ratio for combustion. When the MAF sensor malfunctions, it can lead to a rich or lean fuel mixture, affecting engine performance and fuel-efficiency. 

Catalytic Converter Issues

A failing catalytic converter can trigger the check engine light. This crucial component reduces harmful emissions by converting emissions into less harmful gasses. As it ages, the catalytic converter can become clogged or damaged, affecting engine performance and triggering the check engine light. 

Misfiring Spark Plugs

Spark plugs play a vital role in the combustion process, igniting the air-fuel mixture. When spark plugs misfire or fail, it can lead to reduced engine performance, poor fuel-efficiency, and an illuminated check engine light. Regularly inspecting and replacing spark plugs can help prevent these issues.

Loose/Faulty Gas Cap

The gas cap seals the fuel system and helps maintain pressure. If it's not properly tightened or has a damaged seal, it can allow fuel vapors to escape, triggering the sensor and illuminating the check engine light.

Check Engine Light Diagnostics & Repair in Surprise, AZ

When you need check engine light repair in Surprise, AZ and the surrounding area, contact Edmunds Automotive Repair at 623-259-5969. At our nearby auto shop, we can expertly handle your vehicle’s repair and maintenance needs. Feel free to give us a call today to make an appointment!