Q: When I crank my car the at light comes on then disappears

asked by on

When I turn my car it says at check then disappears? Is that something I need to be worried about? Oreillys did the check test on my car and found nothing? Plz help
My car has an automatic transmission.

Hi There, When you turn the key to the on position prior to turning the engine over, the AT light may come on for a few seconds as the car is running through a series of system checks. This is normal and should not be anything to be concerned about, unless the light stays on after the vehicle is started and does not turn off. The check engine light indicates that there is likely something wrong with the transmission in your vehicle. It is important to have this diagnosed as soon as possible as it could range from something minor to something more serious. Unfortunately, there are many different reasons for this light to come on and the best way to diagnose is to have the vehicle hooked up to a scanner which will download the engine fault codes indicating more specifically what may be wrong. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. When I crank my car the at light comes on then disappears

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

Get a quote

What others are asking

Q: What happens if the power steering system stops working?

The power steering system in your car is not “essential”, but it sure does help. If you’ve never driven a car without power steering, count yourself lucky. Just turning the wheel was a chore. The power steering system in your...

Q: My front heat is not working but rear heat blowing. Had blower motor replaced 4 years ago... do u think it couldBe that again

It is entirely possible that the blower motor has failed. When the blower motor was last replaced, was the blower motor resistor replaced as well ? The resistor is also a big possibility. The blower motor resistor is used to...

Q: Problem with airbag light.

A common reason airbag lights come on is because something is interfering with the seat belt switch — the sensor that detects if the belt is properly fastened. If there is nothing in the seat belt I would have a...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...