As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED LT BRAKE FAULT MSG WHILE AT CRUISE, MSG CLEARED UPON DESCENT. CREW DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT AT MKE. MAINTENANCE WAS DISPATCHED TO THE A/C TO TROUBLESHOOT AND FOUND THE LT OUTBOARD WHEEL SPEED TRANSDUCER AT FAULT. MAINTENANCE REMOVED AND REPLACED THE LT OUTBOARD WHEEL SPEED TRANSDUCER PER EMB AMM. A/C WAS THEN RELEASED BACK INTO SERVICE.