As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1018, CABIN ALTITUDE HIGH WARNING MESSAGE DURING FLIGHT; FOUND MODE SWITCH ON PRESSURIZATION PANEL IN MANUAL MODE. ROTATE SWITCH TO AUTO FAULT CLEARED.A CCOMP CABIN PRESS FUNCTION TEST PER AMM 21-31-00-720-802A NO FAULTS NOTED UP TO 4.5 PSI. CONFIRM MODE SWITCH IN AUTO AFTER PRESSSURE CHK