When the check engine light on your car’s dashboard illuminates, it can be a cause for concern. While it might be tempting to ignore it, doing so can lead to more expensive problems, so it’s best to promptly visit the shop for diagnostics. At Everett Transmission & Auto Repair, we provide expert check engine light diagnostics and repair in the greater Everett, MA area. Here’s a look at five common check engine light triggers. 

Oxygen Sensor Trouble

Your car’s oxygen sensor monitors the amount of unburned oxygen in the exhaust system, helping your car’s computer to adjust the air-fuel mixture for optimal performance and emissions. A failing oxygen sensor can cause the engine to run less efficiently, increasing fuel consumption and emissions. 

Catalytic Converter Issues

The catalytic converter is an essential component of your vehicle’s emissions system, converting harmful gasses into less harmful substances. If it becomes damaged or clogged, your car's performance can suffer, and emissions will increase. If your check engine light is accompanied by a decrease in performance, there may be an issue with your catalytic converter.

Faulty Spark Plugs 

Spark plugs and their associated wires play a crucial role in igniting the fuel-air mixture in the engine. As they age spark plugs can become fouled, leading to misfires and rough engine performance. Replacing spark plugs and wires is a part of regular vehicle maintenance, and doing so can improve engine performance and fuel-efficiency.

Loose or Faulty Gas Cap

One of the simplest reasons for an illuminated check engine light is a loose or faulty gas cap. The gas cap seals the fuel system and maintains pressure. When a gas cap is loose or missing, fuel may evaporate before your car gets the chance to run on it.

Mass Airflow Sensor Problems

The mass airflow (MAF) sensor measures the amount of air entering the engine to help determine the proper air-fuel mixture. A faulty MAF sensor can lead to decreased engine performance and worsening fuel-efficiency. 

Check Engine Light Repair in Everett, MA

When you need auto repair in Everett, MA and the surrounding area, contact Everett Transmission & Auto Repair at (617) 958-2785. At our local auto shop, we can expertly address your vehicle’s repair and maintenance needs. Feel free to give us a call today to make an appointment!