Picture this. You’re driving down the beautiful Pacific Coast Highway without a care in the world, when all of a sudden something catches your eye. You look down at your dash and your greatest fear is confirmed: the check engine light is on. To make matters worse, this ill-fated omen could be caused by any number of problems under the hood.
That’s where Kearny Mesa Automotive comes in, as today we’re discussing the top four reasons why your check engine light may be on. Read on to learn more and find out how our skilled mechanics in San Diego can help!

Faulty Oxygen Sensor
One of the most common reasons why the check engine light comes on is a malfunctioning oxygen sensor. This sensor monitors the amount of oxygen in your vehicle’s exhaust system, ensuring optimal fuel usage. A faulty oxygen sensor can negatively impact your car’s fuel efficiency and emission levels, which is why it’s best to get it checked out by a professional automotive technician.

Loose or Damaged Gas Cap
A loose, faulty, or damaged gas cap might seem like a minor issue, but it can still trigger the check engine light. This is because the gas cap maintains the pressure in your vehicle’s fuel system and prevents harmful gasoline fumes from escaping. At Kearny Mesa Automotive, our auto repair experts can inspect your gas cap, making sure it’s sealing properly or suggesting a replacement if necessary.

Failing Catalytic Converter
A failing catalytic converter is another serious issue that can trigger the check engine light. This car component helps reduce harmful emissions by converting them into less harmful substances. As such, a faulty converter can impair your vehicle’s performance, decrease fuel efficiency, and, if left unaddressed, lead to more extensive damage. To remedy the problem before it escalates, stop by our auto repair shop in San Diego for a comprehensive diagnostic test.

Malfunctioning Mass Air Flow Sensor
The mass airflow sensor (MAF) measures the amount of air entering your vehicle’s engine, allowing for the precise control of fuel injection. When the MAF sensor malfunctions, it can lead to poor engine performance, reduced fuel efficiency, and the check engine light coming on. Rest assured, our knowledgeable technicians can diagnose the issue and clean or replace the sensor to restore your vehicle’s optimal performance.
Don’t let your check engine light continue to be a blight upon your car’s dashboard. Visit Kearny Mesa Automotive today for a quick fix, and discover why we’re known as the best auto repair shop in San Diego!