As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELP - FLIGHT 2311, THE CREW REPORTED AIRCRAFT PRESURIZATION FAILED IN AUTO AND MANUAL AFTER T/O. THE AIRCRAFT RETURNED TO ELP WHERE IT LANDED WITHIOUT INCIDENT. THE CABIN PRESSURIZATION SYSTEM WAS PLACED ON MEL, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. FLIGHT 2311 THE AIRCRAFT LANDED AT IAH WITHOUT INCIDENT WHERE MAINTENANCE OPERATIONALLY CHECKED THE PRESSURIZATION SYSTEM WITH NO DEFECTS. REMOVED THE MEL, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.