As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CRUISE LOST BOTH FORWARD AND AFT OUTFLOW VALVE AUTO CONTROL, COMPLETED FLIGHT ON MANUAL MODE.6 WIRES WERE FOUND BROKEN IN THE CONNECTOR PLUG BACK SHELL OF PLUG 2131-P4 AT ZONE 154 STA 1513. WIRES REPAIRED, FUNCTION CHECKED SERVICEABLE.