Why is my check engine light on in my Hyundai Sonata?

So you’re driving along and your Hyundai’s check engine light comes on. Your check engine light can signal different problems. It could mean a loose or missing gas cap, faulty oxygen sensor, under performing catalytic converter, faulty mass air-flow sensor or misfire in a cylinder.

Can I drive with check engine light on?

The rule of thumb is that if the check engine light is flashing, you can’t keep driving the car. It’s an emergency. Often it indicates an engine misfire. If you keep driving, you will likely cause irreversible damage, mostly to the (expensive) catalytic converter.

How much does it cost to fix the check engine light?

The costs to fix whatever’s ailing your car — and causing the light to come on — can vary greatly. Repair costs for the most common check engine light problems range from under $20 to almost $1,200, according to CarMD’s analysis of millions of repairs recommended in 2016 in the U.S.

Can check engine light come on for oil change?

Your Car Needs an Oil Change An illuminated check engine light is the first warning sign that your vehicle needs an oil change. It can activate because the oil is too dirty or when there’s not enough flowing throughout the engine. If it’s dark, black in color, or too low, schedule an oil change today.

Can low oil level cause check engine light to come on?

The low oil level is something that certainly needs to be addressed. However, it is generally not a cause for the check engine light to come on. The check engine light comes on when an electrical / electronic issues in the engine management system.

Why does my check engine light turn on after filling up?

The cap is a crucial part of a car’s fuel delivery system. It notably prevents gasoline fumes from leaving the fuel tank, and it helps keep the whole system under the correct pressure. If your check engine light turns on immediately after a fill-up, pull over and make sure the cap isn’t loose — or still on your car’s roof.

What does the Check Engine light mean on a car?

The Check Engine Light (CEL) is one of the most commonly illuminated indicator lights on any given vehicle. This light can illuminate when there are one or more errors, as reported by a vehicle’s diagnostics, present with the performance of a car. The problem with this light is that it is as common as it is misunderstood.

Can you check your own check engine light at AutoZone?

All that you need to check your own light is an OBD-II reader, which can pull codes that help you find out what’s wrong with your car. If you don’t have a code reader, keep reading to learn the most common causes, and then bring your car to your local AutoZone to find out why your Check Engine Light is on.