As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT, AFTER YAW DAMPER ENGAGED DURING CHECKLIST OPERATION NOTICED YAW DAMPER OFF LIGHT ILLUMINATED. YAW DAMPER CIRCUIT BREAKER TRIPPED. ACFT GROUNDED. RESET YAW DAMPER ACFT CIRCUIT BREAKER IAW MM 20-60-01, YAW DAMPER OPS & SYSTEM TESTS CHECKED NORMAL IAW MM 22-23-00. NO HISTORY LAST 90 DAYS.