Automotive Issues that Can Trigger the Check Engine Light

4 Common Auto Electrical Problems

Automotive Issues that Can Trigger the Check Engine LightAn illuminated check engine light often causes car owners to worry that disaster is looming. However, this warning light doesn't necessarily mean that your engine is on the verge of failure. Nevertheless, it's best to get to the shop for computerized diagnostics so that any emerging issues can hopefully be remedied before they get worse and require costly repairs. Here's a look at seven reasons the check engine light comes on.

Failing Catalytic Converter

A healthy catalytic converter turns carbon monoxide into an emission that isn't as bad for the environment. Decreased acceleration and dark exhaust smoke are indications of catalytic converter trouble.

Bad Oxygen Sensor

Oxygen sensors do the important job of monitoring the amount of unburned oxygen in the exhaust system. When oxygen sensor issues occur, catalytic converter problems may ensue.

Failing Mass Air Flow Sensor

Mass air flow sensors track how much air is coming in, and then calculate the quantity of fuel to inject with it. You could be dealing with a mass air flow sensor issue if your engine stalls shortly after you fire it up.

Faulty Spark Plugs

As spark plugs age, they're prone to misfiring, which can hurt performance and gas mileage. Vehicles that were manufactured after 2000 can regularly go 100,000 miles before they need their plugs to be replaced. Older vehicles usually need their plugs changed sooner.

Loose/Missing Gas Cap

As bizarre as it may seem, a poorly fitting gas cap can actually cause the check engine light to turn on. It can also result in fuel evaporating before you get the chance to use it.

Failing Battery/Charging System

The check engine light could turn on if a malfunctioning battery causes low voltage at the computer.

Bad Ignition Coil

To generate the spark to get your engine fired up, you need healthy ignition coils. Loss of power and misfiring are two symptoms of ignition coil trouble.

If you need auto repair, be sure to bring your vehicle to a reputable mechanic. For check engine light diagnostics & repair in Phoenix, AZ, contact the experts at Greg Clark Automotive Specialists at (602) 353-7431. Feel free to give Greg Clark Automotive Specialists a call today to schedule an appointment for any of your vehicle's repair or maintenance needs!


Greg Clark Auto Specialists Blog
Posted: November 20, 2020

Written and Published By MORBiZ