hello everyone i am having a little issue. each time i brake my abs kicks in its like pulsating and anti lock light flashes and goes away. i scanned it and it has this 4 codes
21 Right Front Wheel Speed Sensor Erratic
22 Left Front Wheel Speed Sensor Erratic
23 Right Rear Wheel Speed Sensor Erratic
24 Left Rear Wheel Speed Sensor Erratic

someone told me that its the abs control unit i replaced it still the same issue can someone help me out to figure out the issue i don't think all 4 speed sensors go bad at the same time

so far this is what i did
changed abs control unit
checked all 4 speed sensor looks fine

 

A long shot, but the only thing that comes to mind would be the speed sensor in the transmission. Not sure if those signals meet up in the ECU or not and have to agree with each other. I assume your speedometer is working correctly right? What about the relay for the module?

The only other thing would be that the new ABS module needs to be flashed or something to that effect, but I have never heard of that with our cars. Good luck.

 

ok speedometer is working fine i am getting a same reading from all 4 speed sensors when i speed up and slow down there is no delay. When it comes to abs control unit i can put back my oem since i know the problem is not from that then i will have to check that tranny speed sensor
could it be a G-Sensor