As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON ARRIVAL AT GATE ALL DOORS HAVE PRESS FLASHING LIGHT WITH ZERO CABIN PRESSURE AND OUTFLOW VALVES OPEN. REPEAT ITEM. CORRECTIVE ACTION: PERFORMED CPCS BITES OF AUTOMATIC PRESSURE CONTROL AND SEMI-AUTOMATIC PRESSURE CONTROL. BOTH TESTS PASSED. ALSO PERFORMED DSCS 1 AND DSCS 2 SYSTEM TEST, NO FAULTS.