As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT BETWEEN EUG - LAX WAS DIVERTED TO SMF. LEVEL AT FL370. BRAKE OVERHEAT WARNING MESSAGE ILLUMINATED. TEMPERATURE FLUXUATED BETWEEN 0-20, AFTER GEAR EXTENTION, TEMP WENT DOWN TO 0 WITH OCCASIONAL FLUXUATION. BACK TO 20 WITH ACCOMPANING WARNING. LANDED WITHOUT INCIDENT. REMOVED AND REPLACED RIGHT HAND BRAKE TEMP SENSOR. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.