Why Is My Check Engine Light On?

If you find that the engine-shaped, orange-colored icon on the instrument cluster of your car is on, something might not be quite right under your hood. It can be a nuisance to see your Check Engine on, but ignoring it will most likely result in more problems for you. Hence why you need to pay attention to what it's trying to tell you. 

 

Your check engine light could be on due to several reasons. While some may not be so serious, some could be serious enough to end up in you paying thousands of dollars in repair. Below, we take a look at some of the most common reasons behind why your check engine light could be on. 

 

The oxygen sensor has failed. 

The oxygen sensor or O2 sensor measures the amount of unburnt oxygen present in the exhaust system of your vehicle. Even if your O2 sensor has failed, your car will keep running. But your engine will burn much more fuel than required, which means a weak fuel economy. 

 

Replace your catalytic converter.

The catalytic converter is a critical component of your exhaust system that converts harmful carbon monoxide into carbon dioxide, thereby helping to protect the environment. If there's any damage caused, your check engine light will be switched on. 

 

If you do not replace it quickly, your car might fall victim to reduced fuel economy and poor performance. Also, you will undoubtedly fail your emissions test. 

 

You have a loose gas cap.

One of the most common reasons for the check engine light turning on is a loose gas cap. The cap seals your car's fuel system so that gasoline fumes don't escape, thereby helping the fuel tank to maintain the right pressure. If you don't replace your loose gas cap as soon as possible, you can lose much fuel through evaporation. 

 

It would be best if you had a new mass airflow sensor. 

Your MAF or mass airflow sensor measures how much air enters the engine so that the vehicle can determine the amount of fuel required to run as efficiently as possible. Failure to replace may cause reduced performance and damage to O2 sensors. 

 

If you're facing check engine light issues in Smithtown, Hauppauge, Melville, contact us at Huntington Subaru, and we'd be happy to help out.
Categories: Service
)
; ;