Most Common Check Engine Light Causes

Is This Why Your Light Is On?

Nothing causes more panic in an auto owner’s heart than when a car’s check engine light turns on. We’ve all been there before. One day everything is perfectly fine. And suddenly, the check engine light comes on with no warning, causing an immense feeling of dread. While it may be one of the most frustrating things to deal with as a car owner, there are several reasons why a check engine light comes on, and not all of them are bad.

If your check engine light has come on unexpectedly, call S & M Auto Service today. We can help diagnose what the problem could be. Let’s take a look at some of the most common check engine light causes.

Loose or Broken Gas Cap

One of the most common causes for a car’s check engine light to come on is a loose or broken gas cap. If you’ve tried tightening it and the light remains on, you can purchase a new gas cap at your nearest auto parts store without spending too much money.

Faulty Oxygen Sensor

Over time, a car’s oxygen sensor can get covered in oil and debris, reducing the sensor’s ability to detect oxygen and fuel mixture. Depending on the make and model of your vehicle, a new oxygen sensor can cost upwards of $2,000 but is also something that can be replaced at home by following the owner’s manual. Regardless, this is a problem that should not be ignored for long.

Catalytic Converter Needs Replacing

A car’s catalytic converter is responsible for reducing exhaust gases and converting carbon monoxide and other elements into less harmful compounds. If the catalytic converter has failed, it can not only cause a reduction in gas mileage, but it can also prevent a car from running. While this repair is expensive, it’s essential to have it inspected as soon as possible.

Mass Airflow Sensor Has Gone Bad

The mass airflow sensor is what tells the car’s computer how much fuel to add based on the air intake within the engine. A faulty airflow sensor can increase your vehicle’s emissions and eventually cause the car’s engine to stall. Luckily, a replacement should only cost between $200 to $300 depending on the make and model of your vehicle and is a relatively simple repair when completed by a professional.

If your check engine light has come on, bring your vehicle to S & M Auto Service today to have one of our certified technicians take a look. With over 40 years of experience in Vancouver, British Columbia, we have extensive knowledge to quickly and efficiently handle any of your auto service needs.

By on May 21st, 2020 in Check Engine Light