As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACFT WOULD NOT PRESSURIZE. ALSO ACFT HAD LT FWD DOOR EICAS MESSAGE. LT FWD DOOR REMAINED WITH OVERHEAD ENTRY DOOR LT ON DESCENT 4300 WENT OUT, BACK ON AT 4200, STAYED ON UNTIL BLOCK IN. REPLACED NR 1 AUTO CABIN CONTROL UNIT IAW MM 21-31-02 IPC REF 12-31-02-01.