As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED LT/RT BRAKE FAULT MSG APPEARED ON EICAS DURING APPROACH. CREW DECLARED EMERGENCY AND LANDED WITHOUT INCIDENT INTO PHL. MAINTENANCE WAS DISPATCHED TO THE A/C, AND TROUBLESHOT AND FOUND THE BRAKE SHUT OFF VALVE TO BE AT FAULT. MAINTENANCE REMOVED AND REPLACED THE BRAKE SHUT OFF VALVE, AND PERFORMED OPS CHECKS FOR EMB AMM. A/C WAS RELEASED BACK INTO SERVICE.