As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YAW ACTUATOR CAUTION ILLUMINATED IN FLIGHT. MALFUNCTION WAS INDICATED ON THE CAD ONLY. LOWER YAW TRIM LIGHT DID NOT ILLUMINATE. DURING TROUBLESHOOTING, FOUND YAW SEMA BAD, ALSO HAD CODE YAWEMA INVAL. REMOVED AND REPLACED SEMA ACTUATOR IAW AMM 67-20-00, 4-14.