As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED PARKING BRAKE NOT REALEASED MSG IN FLIGHT AND THE "ON" LIGHT FOR EMERGENCY BRAKE WAS FLICKERING DURING FLIGHT. DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT INTO MCI. MAINTENANCE REMOVED AND REPLACED BOTH EMERGENCY BRAKE PSI SWITCHES PER EMB AMM, OPS CHECK GOOD.