As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRESSURIZATION AUTO FAIL. FOLLOWED QRH. AUTO FAIL LIGHT STILL ILLUMINATED. LOST PRESS IN MANUAL MODE. PERFORMED FIM TASKS. NO CURRENT FAULTS. INSPECTED CPC CONNECTOR, WIRES AND PINS. NO DEFECTS NOTED. PERFORMED GROUND TEST BITE PROCEDURE. NO FAULTS NOTED AT THIS TIME. DUE TO HISTORY REMOVE AND REPLACE P5-6 CABIN PRESSURE SELECTOR MODULE ASSEMBLY PN: 7123-19973-03AB. R&R CABIN PRESSURE CONTROL MODULE. OPS TEST GOOD.