As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO FAIL LIGHT ILLUMINATED IN CRUISE ALTN CONTROLLER OPERATED NORMALLY. GROUNDED - YES. NR 2 DPCP SHOWS "OFV LRU FAIL" AS AN EXISTING FAULT AND PREVIOUS FLIGHT LEG, REF FIM 21-31 TASK 801. AC CHECKED AND RELEASED PER MEL 21-14C, NR 2 AUTOMATIC CABIN PRESSURIZATION MODE INOP. REMOVED AND REPLACED AFT OUTFLOW VALVE REF AMM 21-31-03. OPS CHK GOOD. BITE CHK PASS. THIS CLEARS MEL 21-14C.