Smity1687

i replaced my ball joints and tie rods and i broke one of the abs speed sensors. so i finally got time to fix the sensor and i turned all the lights off with a scan tool when i was done. all the lights stayed off after i drove the car but now when i am coming to a stop right before i come to a full stop i hear this buzzing sound for a second coming from somewhere near the brake pedal and i also loss a little bit of pressure in my brake pedal. i dont know what the problem is and no abs lights or brake lights come on. if anyone has had a problem like this i would really appreciate any advice you have so i dont make the problem worse by driving the car like this for any longer.