have the alternator circuit checked
change the oil filter
Turn off the engine
Check the adjustment of the brake light switch.
The phrase 'give off light' means to have a lot of light.
If the overdrive's off light is on that means it's off. If it is off then the overdrive is on.
Check the fluid level in the master cylinder.
push in on the door panel. use a small flat head screw driver push the clip of the crank an then pull the crank off
what does it mean when light comes on
I own a 1994 Nissan Sentra, it has 1 belt, a serpintene type that turns all applicable ingine componants including the power steering. There is a spring loaded pully with a smooth face, there is a bolt in the center of the pully. Turn the bolt clockwise to aloow the belt to be taken off and replaced.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.