As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 2442 EWR TO GSP: DURING CLIMBING OUT OF EWR, CREW REPORTED PRESSURIZATION PROBLEMS. FLIGHT WAS DIVERTED TO RIC. RIC MAINTENANCE REMOVED AND REPLACED DIGITAL PRESSURIZATION CONTROLLER. MAINTENANCE PERFORMED OPERATIONAL CHECK SUCCESFULLY. ACFT WAS THEN APPROVED TO RETURN TO SERVICE.