As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DUE TO CABIN ALTITUDE, AUTO 1 AND CABIN ALTITUDE AUTO 2 EICAS MESSAGES WITH NO CONTROL OF CABIN PRESSURE IN EITHER MODE. BITE CHECK OF CONTROLLERS FOUND CONTROLLER FAULT ON EACH ONE. REPLACED BOTH CABIN PRESSURE AUTO CONTROLLERS IAW AMM 21-31 AND CHECKED OK.