The brake light is on in my car constantly. its not the parking brake switch becuase its not connected. Its not the low fluid level sensor becuase i have plenty of fluid and i also jumpered around that. What other things can set off that light?
ABS sensors will not cause this fault. A hard fault in the module can.
The ABS light comes on if the module fails a self test, not the BRAKE light. However, if both lights are on, the BRAKE light must be resolved first since a fault in its operation generally automatically causes an ABS fault light.
You might also want to check to see how worn your brakes are. Mine did that when they were seriously worn down. I checked the fluid level and it was fine, and I don’t have ABS so it wasn’t that.