As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE THE CREW REPORTED A YAW DAMPER AND AUTO PILOT FAIL FOLLOWED BY RUDDER 1 AND RUDDER 2 FAIL MESSAGES. THE QRH WAS FOLLOWED AND THE YAW DAMP MESSAGE CLEARED BUT THE RUDDER FAIL MESSAGES RETURNED. THE AIRCRAFT DIVERTED TO CMH WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE RUDDER SYSTEM 2 PRESSURE SWITCH IAW EMB AMM 27-23-04, OPS CHECK NORMAL.