As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2223 - EWR - FLIGHT CREW REPORTED EXCESSIVE FLUCTUATION IN CABIN PRESSURE DURING DESCENT AND CABIN RATE ALSO EXCESSIVE. EWR MX REMOVED AND REPLACED THE ELECTRO-PNEUMATIC OUTFLOW VALVE AND PERFORMED OPERATIONAL CHECK SUCCESSFULLY. ACFT WAS APPROVED TO RETURN TO SERVICE.