Seeing the check engine light illuminate on your dashboard can be concerning, and for good reason. While it doesn’t always mean a major issue, it’s best to promptly visit the shop for diagnostics so the problem can be identified and addressed before it worsens. At Absolut Autoworks, we provide expert check engine light repair in the greater Sterling, VA area. Here’s a look at five common check engine light triggers.

Failing Catalytic Converter

The catalytic converter plays a crucial role in reducing harmful emissions by converting pollutants into less harmful substances. If it begins to fail, the check engine light will likely illuminate. Symptoms of a failing catalytic converter include reduced engine performance, poor fuel-economy, and a sulfur-like odor. 

Faulty Oxygen Sensor

The oxygen sensor monitors the amount of unburned oxygen in your vehicle’s exhaust system and helps regulate the air-fuel mixture for optimal combustion. A failing oxygen sensor can cause poor fuel-efficiency and increased emissions. Replacing a faulty oxygen sensor promptly can improve performance and help prevent issues with the catalytic converter.

Malfunctioning Mass Airflow Sensor

The mass airflow (MAF) sensor measures the amount of air entering the engine and helps adjust the fuel mixture accordingly. A malfunctioning MAF sensor can cause rough idling, stalling, and reduced fuel-efficiency. Replacing the sensor as needed can restore engine performance.

Loose or Faulty Gas Cap

One of the simplest and most overlooked reasons for a check engine light is a loose or faulty gas cap. The gas cap helps seal the fuel system. If it’s not tightened properly or is damaged, fuel may evaporate before you get the opportunity to use it.

Faulty Spark Plugs

Spark plugs play a critical role in igniting the air-fuel mixture within the engine. Over time, they can wear out, leading to misfires, rough idling, and sluggish acceleration. If the check engine light turns on due to spark plug issues, replacement can restore smooth engine operation.

Check Engine Light Repair in Sterling, VA

When you need check engine light diagnostics and repair in Sterling and the surrounding area, contact Absolut Autoworks at  703-437-1607. At our nearby auto shop, we can expertly handle your vehicle’s repair and maintenance needs. Feel free to give us a call to schedule an appointment!