Will warped rotor cause abs light to come on?

Answer 1

Quick answer more than likely not. The ABS system has nothing to do with your rotors. Your brake pads come in contact with your rotors to slow you down. You break ware sensor (if equipped) is tripped when the pad wears to its minimum. The ABS is in no way connected to or monitors your rotor. Some vehicles use the ABS to detect a flat tire, among other things, but sounds like you have another culprit.