As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT THE EMERGENCY BRAKE INDICATION WAS ON EICAS DISPLAY. CREW DECLARED EMERGENCY INTO DEN, LANDED WITHOUT INCIDENT. MAINTENANCE CALLED OUT AND TROUBLESHOT AC. MAINTENANCE REMOVED AND REPLACED THE NR 1 HYDAULIC PRESSURE SWITCH PER THE EMB AMM. OPPS CHECKED GOOD, AND AC RETURNED BACK INTO SERVICE.