As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR - CREW REPORTED AUTO PRESSURIZATION FAIL IN FLIGHT AND PERFORMED AIR RETURN UNEVENTFULLY. EWR MX REMOVED AND REPLACED THE DIGTITAL PRESSURE CONTROLLER IAW EMB145 AMM 21-31-00 AND PERFORMED OPERATIONAL CHECKS SUCCESSFULLY. ACFT WAS APPROVED FOR RETURN TO SERVICE.