As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FO'S WHITE LNAV FLAG FLASHING/MISSING WHEN CAPT'S MASTER SELECTED. GROUNDED - YES. PERFORMED FMC BITE REF B737-800 FIM 34-61TASK 801 OPS PASSED FOUND NO FAULTS AT THIS TIME. PERFORMED AC POWER SHUT DOWN AND UP IN REF TO B737-800 AMM 20-60-99 LNAV FLAG NO LONGER FLASHING OKAY FOR SERVICE.