As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FMC DISAGREE UPON LANDING. DURING FLT FO VTK DISPLAYED ON ND BUT WENT AWAY WITHIN A MINUTE. GROUNDED - YES. PERFORMED B737-900 FIM "FMC DISAGREE MESSAGE" 34-61 TASK 835. SUSPECT INTERMITTENT FAULT. ACCOMPLISHED FMC SYS. BITE PER FIM 34-61 TASK 801 NO FAULTS NOTED, OK FOR SERVICE.