Trusted Check Engine Light in VA

Why is My Check Engine Light On?

One of the most misunderstood indicators on your dashboard is the check engine lights. It could be on because your gas cap is loose (That’s an easy fix!), or it might be something much more serious.

Your vehicle’s check engine light can be a source of anxiety and confusion. When that ominous light illuminates on your dashboard, it’s natural to wonder, “Why is my check engine light on?” Fortunately, this article is here to help you understand the potential reasons behind this warning and get a check engine light diagnostic.

Loose Gas Cap

Surprisingly, a loose or improperly sealed gas cap is a common culprit. This can trigger the check engine light as it can lead to evaporative emissions.

Faulty Oxygen Sensor

The oxygen sensor measures the amount of unburned oxygen in your exhaust system. A malfunctioning sensor can lead to reduced fuel efficiency and increased emissions.

Worn Spark Plugs or Wires

These are essential for igniting the fuel-air mixture in your engine. When they’re worn or damaged, your engine may misfire, causing the check engine light to come on.

Catalytic Converter Issues

A failing catalytic converter can trigger the light. It’s crucial for reducing harmful emissions.

Mass Airflow Sensor Problems

This sensor measures the air entering your engine, helping the computer adjust the air-fuel mixture. When it’s faulty, it can affect engine performance.

Issues with the Ignition Coil

The ignition coil sends power to the spark plugs. If it fails, your engine may misfire.

Exhaust Gas Recirculation (EGR) Valve Dysfunction

The EGR valve helps reduce emissions by recirculating a portion of exhaust gases into the intake manifold. A faulty valve can trigger the check engine light.

Bad Fuel Injector

Fuel injectors deliver fuel to the engine’s cylinders. A malfunctioning injector can affect engine performance.

Sensors and Wiring Problems

Various sensors and their associated wiring can become damaged, leading to a check engine light.

PCM (Powertrain Control Module) Issues

Sometimes, the computer that controls your engine may have a problem, causing the light to come on.

In any case, when your check engine light comes on, it’s essential to have a check engine light diagnosed by a qualified mechanic. Ignoring it can lead to more significant problems down the road. Modern vehicles have complex computer systems, and diagnosing the issue requires specialized tools and expertise.

A check engine light diagnostic scan can pinpoint the exact problem, allowing for a swift and accurate repair. Visit Advance Automotive for engine light diagnostic today!

Never Ignore Your Check Engine Light

If your diagnostic system detects a problem in the electronic control system that it is not able to correct, the vehicle’s computer will turn on the check engines warning light. When your check engine lights is lit, your vehicle might be releasing excessive pollutants into the air or consuming too much fuel. (This is why you must have your check engine lights turned off before you can pass your state’s vehicle inspection.)

If your check engine lights is flashing, your vehicle’s computer system has detected a potentially dangerous systems issue and it is not safe to drive your car. If you require towing assistance, please contact us. We offer free towing with repair within 10 miles of our full service shop in Chantilly, VA.

Get To The Root Of The Problem

In addition to the warning light, your vehicle stores a trouble code in its computer’s memory that indicates the source of the problem. While the trouble codes stored in your vehicle’s computer can point to the symptoms of the problem, they can’t specifically identify the cause. Our trained auto repair technicians take these trouble codes as a starting point and begin a thorough engine light diagnostic process. Don’t wonder any longer: Advanced Automotive Inc. can diagnose the problem quickly and effectively.

Call us at (703) 783-1409 to take advantage of your Free Engine Light Diagnostic!