The check engine light is one of the most dreaded warnings for drivers. While it can indicate a minor issue, it could also signal a serious problem that requires immediate attention. The important thing is that you visit the shop for diagnostics before the issue gets the chance to worsen. 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

One of the most frequent reasons for the check engine light is a faulty oxygen sensor. This sensor measures the amount of unburned oxygen in your car’s exhaust and helps regulate the air-fuel mixture for optimal performance. A malfunctioning sensor can cause poor fuel-efficiency and increased emissions. If left unchecked, it can also cause problems with other components like the catalytic converter. Replacing a faulty oxygen sensor is a relatively simple fix but should be addressed quickly.

Malfunctioning Catalytic Converter

The catalytic converter plays a crucial role in reducing harmful emissions by converting toxic gases into less harmful substances. A malfunctioning catalytic converter can lead to decreased engine performance and increased emissions. 

Failing Spark Plugs or Ignition Coils

Spark plugs and ignition coils are vital components of your car’s ignition system. Spark plugs ignite the air-fuel mixture in the engine, while ignition coils generate the necessary spark. If these components fail, the engine may misfire, resulting in rough idling, reduced performance, and the illumination of the check engine light. Replacing spark plugs and ignition coils at recommended intervals is key to avoiding these issues.

Loose or Damaged Gas Cap

It might seem surprising, but a loose or damaged gas cap can trigger the check engine light. The gas cap seals the fuel system. If it isn’t properly sealed, fuel might evaporate before your engine gets the chance to run on it.

Mass Airflow Sensor Issues

The mass airflow (MAF) sensor measures the amount of air entering the engine and helps determine the correct air-fuel mixture. A malfunctioning MAF sensor can cause poor fuel-economy, rough idling, and even stalling. 

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 local auto shop, we can expertly handle your vehicle’s repair and maintenance needs. Feel free to give us a call to make an appointment!