I have a 2002 Nissan Altima Sedan with a 3.5 L engine. My ABS light is on and my ABS doesn't come on. When a code reader is hooked up the computer doesn't output a code. I replaced one of the ABS speed sensor that was broken hoping it would fix the issue and it didn't. I've also replaced the rotors and bad on the back because one of them was warped and I thought it might fix the issue and it still didn't. I checked and tested all of the fuses that have to do with the ABS in the engine bay and they're all good. Any idea what this might be?