As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRESSURIZATION FAILED AT 2000 FT AGL (7500 FT) ON APPROACH. UNCONTROLLABLE CABIN CLIMB AT 2000 FT/MIN TO AIRCRAFT ALTITUDE AND THEN DESCENDED WITH AIRCRAFT. OUTFLOW VALVE INDICATED CLOSED. REMOVED AND REPLACED EQUIPMENT COOLING EXHAUST VALVE, SYS OPS CHK''D NORMAL.