As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CRUISE THE PRESSURIZATION CONTROL PANEL DIGITAL READOUT WENT BLANK. FOR COMPANY CONVENIENCE THE CREW CARRIED OUT AN AIR TURN BACK. MX FOUND THE CABIN PRESS CONTROL PANEL WAS AT FAULT, IT WAS REPLACED & THE ACFT RETURNED TO SERVICE.