As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB THE CREW REPORTED A RUDDER OVERBOOST INDICATION ON THE EICAS DISPLAY. THE ACFT RETURNED TO DEPARTURE AND LANDED WITHOUT INCIDENT WHERE MX REPLACED THE RUDDER NR 1 PRESSURE SWITCH, PERFORMED OPS CHECKS AND CLEARED THE DISCREPANCY.