As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"SINGLE FMC OPS" APPEARED IN SCRATCHPAD FOLLOWED BY: "MAP" & "VTK" ON FO FLIGHT INSTRUMENTS (SELECTED FMC ON LEFT TO RESUME SINGLE FMC OPERATION). GROUNDED - YES. REMOVED AND REPLACED RIGHT FMCS COMPUTER IAW B737-800 AMM 34-61-02/401. FMCS OPS TESTED NORMAL.