Common Reasons the Check Engine Light Comes On

Oftentimes, when the check engine light illuminates, the impulse is to worry that an automotive disaster is near. However, something as minor as a loose gas cap could be triggering the light. Nonetheless, it's best to play it safe and get to the shop for diagnostics so that you don't risk the issue worsening to the point that you need expensive repairs. Here's a look at six reasons the check engine light turns on.

Bad Battery/Charging System

A bad battery can lead to low voltage at the computer, which can consequently cause the check engine light to turn on.

Faulty Catalytic Convertor

Signs of catalytic converter trouble include worsening acceleration and dark exhaust smoke. While this can be a rather expensive issue to address, it's necessary because of the catalytic converter's important job, which is to turn carbon monoxide into an emission that is less damaging to the environment.

Failing Oxygen Sensor

Oxygen sensors keep tabs on the quantity of unburned oxygen in the exhaust system. Oxygen sensor problems can lead to catalytic converter trouble.

Bad Mass Airflow Sensor

Mass airflow sensors monitor the amount of incoming air and determine how much fuel should be injected with it. Rough idling is one sign of a mass airflow sensor issue.

Faulty Ignition Coil

Ignition coils play an important role in generating the spark necessary for engines to come roaring to life on all cylinders. Extreme weather sometimes causes ignition coils to fail.

Loose/Missing Gas Cap

Though it might seem strange, a missing gas cap can potentially trigger the check engine light, while also allowing fuel to evaporate before you get the chance to use it.

If you need auto repair, be sure to visit a reputable mechanic. For check engine light diagnostics and repair in Huntington Station, Greenlawn, and Melville, NY, contact the experts at Springfield Service Center at (631) 427-4848. Springfield Service Center also provides NY State emissions testing in Huntington Station. Feel free to give Springfield Service Center a call today to schedule an appointment for any of your vehicle's repair or maintenance needs!

Springfield Service Center Blog
Posted: August 04, 2020

Written and Published By MORBiZ