As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STATUS MSG OUTFLOW VALVE LEFT. OUTFLOW VALVE AFT AUTO CONTROL ON AFT OUTFLOW VALVE FAILED. STATUS MSG03- NOT ACTIVE CLIMB INTERMITTENT; OUTFLOW VALVE CONTROL UNIT (AFT) OR ECU (R, AFT) HAS NO OUTPUT ON ARINC 429 BUS OR OUTPUT IS INCORRECT. DB- AIR SUPPLY & CABIN PRESSURE CONTROLLER (R) MSG-2139030 ACTIVE RO MODE MSG-2139030 ACTIVE RO MODE MSG-2139490 INACTV CL INTER. REF; SEQ 5392002. OPS CHECK NORMAL.