I’m a newbie to the forum not the Prius (codes C1239 and C1467)

I don’t know if I’m in the right place so feel free to redirect me. I bought my Prius c new in 2014. I’m at 90k and never replaced the brakes and all my brake lights came on recently. I bought a scan tool and got a code for the rear speed sensor (debris - code C1239 and circuit - code C1467). I plan to change the rear shoes and drum (that could be causing debris), hub and bearing (bc they are sold together and the bearing should be replaced anyway and holds the sensor) and probably the sensor wire bc it’s $30 and I’m afraid a bad wire could short circuit the sensor. I’m hoping someone here can share the respective pages of the service manual so I can access torque specs and other pertinent information. And, of course, any other advice you may be willing to share would be welcome and appreciated. Thank you! - a newbie named Kathryn