As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI OUT FOR TAKEOFF, FLIGHT CREW NOTED NR 7 BRAKE TEMPERATURE DIFFERENTIAL ALERT. FLIGHT CREW ELECTED TO RETURN TO GATE. AIRCRAFT RETURNED TO GATE WITHOUT FURTHER INCIDENT. MAINTENANCE PERSONNEL REMOVED AND REPLACED BRAKE TEMP SENSOR. AIRCRAFT RETURNED TO SERVICE. (M)