Brake light is on brakes not working properly

it could be the e-brake may not be completely down allowing the switch to not be pushed all the way off, also the switch may be out of alignment not in the proper place. if the e-brake cable sticks a little it may the handle up enough to not turn off the switch.

The brake light can stay on if the master cylinder is low on brake fluid or if the emergency brake is on. The switch that turns the brake light on could be stuck on by the emergency brake pedal or handle. The check engine light is on because the cars computer senses a fault in the cars system. Have a mechanic shop scope the cars computer

Bad wiring somewhere.. Did you recently install something electronic???

Sounds like it may be a defective brake fluid level sensor on the master cylinder.

Yes, it could be. Or you can check your battery. And try adding brake fluid to your master cylinder. That sometimes will cause the brake light to come on. Or check your emergency brake. Hope this helps, James Booth.

They may stay on if your headlights stay on. Try turning your headlights off and see if the break light goes off.

Make sure the pedal is all the way up.
Check the brake fluid reservoir to see that it is filled to the proper level.

Just for giggles... inspect the brake pads. The light is designed to come on when your brake pads are getting thin as well as low fluid level and emergency brake use.

check the switch on the emergency brake pedal may need an adjustment or may need to be replaced

Is the park brake adjusted properly? u should start to feel resistance on the 3rd click of the brake ratchet, if u don't it need adjustment.