As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 YAW ACTUATOR FAILED DURING THE AUTO PILOT TEST. AVIONICS DID AIRBUS RESET BUT CONTINUED TO FAIL. DURING TROUBLESHOOTING FOUND THE YAW SEMA HAD A VALID SIGNAL IN BUT NO VALID SIGNAL OUT. REMOVED AND REPLACED THE YAW SEMA IAW AMM 67-20-00, 4-14.