Since this question is in two different car categories, refer to the vehicle specific "Related Questions" below.
your brake fluid is low
The abs computer has detected an electrical malfunction and set a code.
Assuming they came on at the same time, scan the ABS computer for codes to help narrow the focus.
Your emergency brake is to tight on the back brakes, which is not allowing the ABS to work properly. that's why both lights are on. Good Luck
the rotors do not have the ridges so the abs sensor can see something.did you purt abs rotors or non-abs rotors on vehicle. most cars light up brake when low on brake fluid, a few cars light up ABS to show same thing. Of course there is the possibility that there really is something wrong with the ABS circuit.
brake and abs light on , on 1994 Chevy Cavalier Z24
No , the brake light should come on when you press the parking brake pedal , but the ABS light should not come on
If only the red brake light is coming on, the parking brake is on or the brake fluid is low. If the yellow abs light is also on, the abs computer has detected a malfunction and set a code.
Are you sure it was the ABS light and not the Brake light? The Brake light indicates a leak in the system. The ABS light indicates a sensor gone bad.
It a persons ABS light and brake lights are on they should fix the problem. This usually means fixing something within the brake system.
If the ABS and brake light are coming on while driving, this is an indicator that it is time to get your brakes checked and replaced. If not, the brakes will wear out causing you to not be able to stop.
the ABS light indicates a problem in in Abs system, a brake light indicates a problem with main braking system. such as low fluid level, leaks in system, parking brake on etc. Abs system works in conjunction to brake system. but abs system is not the main or basic braking system.