As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA FLIGHT NR 2316: WHILE TAXING OUT, YAW DAMPER WOULD NOT ENGAGE ALONG WITH RECEIVING A PITCH MISMATCH ON THE FLIGHT DIRECTORS. COMMAND BARS WERE SPLIT (5 DEG ON CA SIDE/10 DEG ON FO SIDE) MAINTENANCE REMOVED AND REPLACED NR 2 AHRS IAW MTC 6342101. OPS CHECK GOOD. PITCH MISMATCH GONE. FD BARS MATCH AND YAW DAMPER ENGAGES. AIRCRAFT PLACARD AND STATUS ARE NOW CAT III. MTX CONTROL WAS NOTIFIED. RSI PLACARDS REMOVED (373249). AIRCRAFT RETURNED TO SERVICE.