i don't know if this is exactly an answer but I've noticed mine does that on cold mornings (around 32 degrees)
The selector lever.
An automatic transmission is a type of car transmission that shifts gears on its own. Therefore, cars with automatic transmissions will not have a clutch pedal and will have a selector lever as opposed to a shift knob.
It's below the gear selector lock button on the automatic transmission cosole shift
k
Transmission hot, car on a level spot, selector in park.
You can find it about midways back under the vehicle, middle left hand side.
That means the switch on the gearbox or lever is stuck for some reason.
The button on the end of your automatic transmission gear selector lever " P " " R " etcetera got pushed , push it again and that will allow the overdrive feature and the light will turn off
On a 2002 Ford Explorer : The automatic transmission gear selector lever is on the steering wheel column ( if you are asking about the automatic transmission fluid level dipstick , starting with the 2002 model year of the Ford Explorer four door , there isn't one )
You could have a : ( C6 ) - 3 speed automatic transmission ( check the sticker on the end of the drivers door for the transmission code " K " or an ( E4OD ) - 4 speed automatic transmission ( code " E " ) Has an overdrive cancel switch on the end of the gear selector lever and displays P R N (D) 2 1
Because small plastic clip has broken off white plastic part.
Not sure what you mean by transmission selector sensor. The transmission range sensor reads what position you have selected with the gear shift lever.