Q: Left cap off-check engine light won't go off

asked by on September 08, 2016

I have a 2008 Hyuandai Elantra. My niece drove my car. She filled it up with gas. I was driving the car and the check engine light came on. I checked the gas cap first thing, and she had forgot to screw it back on. It's been 24 hours since I screwed it on and I have driven it forty miles and it still has not went off. I took the car to the local auto zone and the code they gave me indicated the same issue. Will it go off automatically, or will I have to take it to the dealership? Thanks in advance!!

My car has 104000 miles.
My car has an automatic transmission.

Check Engine Light is on Inspection $79.99 - $89.99 Get a Quote

Hey there. After a few ignition cycles - started, driven, and shut down - the code should erase itself if the ECU no longer sees the loose gas cap as a continuing fault. There shouldn’t be any drivability problems if this was the only code. If the light still persists after a few drives, I would have the codes diagnosed more thoroughly and the data read with a scanner to see what needs to be done to clear the code.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Tachometer and temp guage

Hello. Thanks for writing in about your 1994 Mazda 626. The fuse that powers the gauges are the meter fuse 15 amp. It is located in the joint box. If this doesn't fix the issue, consider YourMechanic, as one of...

Does my 2008 Cadillac CTS 3.6 have two timing chains.

Hello. To answer your question, yes, this engine has two timing chains. If you have a timing code coming up then you may simply need to have the oil changed or there may be a more serious issue. If you...

Camshaft sensor leaks oil 2008 Chevrolet Colorado

Hi there - not entirely sure what your question is. The cam position sensor, while getting oil splashed on the sensor tip, has an o-ring on it to seal against oil leaks. It doesn't not normally leak oil if the...

Check Engine light comes on, mechanic replaced o2 sensor but light still comes on.

Hi there: If the mechanic completed the O2 sensor replacement, reset the codes and the error code was triggered again, it is possible that the catalytic converter is damaged and needs to be replaced. However, it's also very common for...

What does the key reminder chime mean?

The key reminder chime sounds inside your vehicle when the driver’s door is opened, but the car is not yet turned off. This is an important safety feature that can keep you from locking your keys inside your car.

The ESC off light came on while I was driving. What does it mean?

Hi there. The electric stability control (ESC) off indicator is located on the instrument panel. This light is illuminated when the ESC has manually been turned off. If the light popped up while driving and the button was not selected,...

Can you give me an idea of the cost of repairing my 2008 Chrysler Sebring convertible?

Good afternoon Sybil. Thank you for continuing to ask questions. The more you know about the issues with your car, the better informed you will be to make good decisions about repairs The Manifold Tuning Valve for your Sebring can...

No overdrive in my car.

Hi there. Check the 3-4 shift solenoid through the harness to the transmission and see if there is a resistance on it. If there is no resistance on the solenoid, then the solenoid is burned up and needs replaced. Also,...

Car only start when cold but dies once warm and wont start till complete cold

You may have more than one issue going on here for your 1987 Toyota Celica. The cold starting issue could possibly be caused by a failing fuel pump or even a temperature sensor. Heat increases resistance in electrical circuits, and...

Related articles

A Buyer’s Guide to the 2012 Hyundai Santa Fe
Over Over the years, the Hyundai Santa Fe has really started to come into its own as an SUV. The vehicles have always been affordable, and the same holds true with the 2012 model. Key Features The vehicle offers bucket...
A Buyer’s Guide to the 2012 Hyundai Sonata Hybrid
When When Toyota first introduced the Prius, the idea seemed to be that all hybrids and electric cars had to have their own specific models and that they couldn’t look like normal cars. A lot of consumers weren’t too thrilled...
The Best Used Cars to Buy If You're a Teacher
If If you are a teacher, probably foremost on your mind is getting to school on time. You would also probably like a used car that is easy on gas and not terribly expensive, and will hold your gym gear...