Q: Q: AT light on

asked by on

Took my car to my mechanic last week to get AC/ heating fixed. Next day the AT light was on. Checked transmission fluid, it was at a good level. Car seems to be driving fine, just the same.

My car has 150000 miles.
My car has an automatic transmission.

One of the most common causes for this light to come on is the transmission input speed sensor goes bad and the transmission module connector. If you have the system scanned you would get codes pertaining to the input speed sensor of the transmission. The sensor is in the top of the transmission under the battery tray.

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. Q: AT light on

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: Starts but does not run for very long

I would recommend checking and cleaning your mass air flow sensor as this can cause a lean or rich fuel mixture when not working properly. With this happening, there should be a Check Engine Light on that would have registered...

Q: Transmission acting up causing car to shake and loose acceleration.

Hello, with a fault like that there is a good chance that a code has been set in the traction system, transmission, and engine control. A scanner will need to be connected to check the system. The most likely cause...

Q: Q: Fuse box

The alternator on your vehicle is sized to the vehicle's electrical demand (total load) and so adding electrically powered devices, except those that are fed at built-in accessory sites such as 12 volt "plugs" in the vehicle, is generally not...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...