As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AUTO PRESSURIZATION DID NOT WORK FOR THE FLIGHT. WE MAINTAINED 9,000' FOR CRUISE. CABIN DIFFERENTIAL STAYED NEAR ZERO, AND CABIN ALTITUDE FOLLOWED THE ALTIMETER. REMOVED FROM SERVICE. AFT OUTFLOW VALVE AND DOOR SEAL PRESSURIZATION RESERVOIR DRAIN VALVE REMOVED AND REPLACED. A/C PRESSURIZATION CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.