As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FUNCTIONAL CHECK OF THE AUTOMATIC MODE PASSENGER OXYGEN FUNCTIONAL CHECK, THE PASSENGER MASKS WOULD NOT DEPLOY, THE CABIN ALTITUDE CAS MESSAGE WAS DISPLAYED. FOUND WIRES W201-11401-20 AND W201-11403-20 REVERSED IN CONNECTOR P2060. CONNECTED WIRES IN CORRECT POSITION AND FUNCTIONAL TEST PASSED, MASKS DEPLOYED CORRECTLY.