As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TOUCHDOWN @ SEA BOTH FMC P/RST LTS ILLUM. BOTH FMC SHOW NO FMC PROMPT. DURING TAXI THIS SEQUENCE REPEATED MULTIPLE TIMES. FMC FUNCTIONS NOT AVAIL. INTERMITTENT VTK FLAG ON CAPT MAP DISPLAY. INDICATES LEFT FMC FAIL. GROUNDED - YES. LEFT FMC LOGGED PGM FAULT. ACCOMP B737-900 FIM 34-61 TASK 807, SYS RESTORED AND OPS CKS NML PER B737-900 AMM 34-61-00. GND VERIFICATION SUCCESSFUL.