As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED THAT THEY RECEIVED A RAM AIR VALVE FAIL MESSAGE IN FLIGHT. THE CREW RETURNED TO FIELD AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE DEFERRED THE RAM AIR VALVE. THE DEFERRAL WAS CLEARED LATER THAT DAY WHEN THE RAM AIR VALVE SUCCESSFULLY PASSED OPS CHECKS.