As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT FMC FAIL INDICATED BY "MAP" ON FO ND AND "SINGLE FMC OPERATION IN SCRATCH PAD. GROUNDED - YES. PERFORMED B737-800 FIM 34-61 TASK 836 AND NO FAULTS FOUND. FLIGHT MANAGEMENT COMPUTER SYSTEM OPERATIONAL TEST GOOD, REF B737-800 AMM 34-61-00-710-801.