ABS Wheel Speed Sensor Problems

Hi

I’m working on a 2003 Tacoma and the abs light is on. I read the code and it showed that there was an issue with the rear wheel speed sensors.
The LR sensor is putting out .400 - .800 ac voltage which is good. The RR sensor is putting out only .030 ac voltage. The wheel that the sensor sits on top of and reads looks fine. No damage or chips, there’s a little bit of rust but not much.
I replaced the sensor and it’s still putting out the same readings. Neither sensors really had any material on the magnetic side when I pulled them out. I don’t see it being a coincidence that two sensors are bad so what else can be causing it?

Please help! Thanks!