As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM: CABIN PRESSURIZATION CONTROLLER FLT ALT WILL ONLY SET 37000 AND 37500. PERFORMED FIM-21-31 TASK 803 AND FOUND A DEFECTIVE CABIN PRESS CONTROL MODULE. REMOVED AND REPLACED CABIN PRESSURE CONTROL MODULE PASSED BOTH PRESS SYSTEM GROUND & MANUAL MODE TEST. A/C BACK IN NORMAL CONFIGURATION ALL MAINT DONE IAW AMM 21-32-02.