As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HAD "FMC DISAGREE" MESSAGE ON BOTH FMC'S ON TAXI OUT. PERFORMED QRH PROCEDURE AND NO FURTHER FAULTS. ACFT GROUNDED. ACCOMPLISHED FIM 34-61, TASK 835, FMC DISAGREE MESSAGE FAULT ISOLATION. NO FAULTS FOR INFLT FAULTS FOR FMCS A & B AND ALL SENSORS SHOW OK FOR A & B. IAW STEP (D-2) FAULT WAS INTERMITTENT DUE TO NO FURTHER FAULTS NOTED. NO HISTORY LAST 90 DAYS.