As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEMS, CABIN PRESSURE CONTROLLER 1 AND 2 UNABLE TO DESCEND CABIN AT IDLE THRUST IN DESCENT. PERFORMED FIM 21-33-00. REMOVED AND REPLACED CABIN PRESS GAUGE PWR PER AMM 21-33-01/401. PRECAUTIONARY REPLACED NR 2 AUTO PRESS CONTROLLER PER AMM 21-31-02-404-005 (FAILED LAMP TEST). BITE CHECK GOOD PN 2117388-15 SN ON 18-1326 OFF 27-1101. BITE CHECK BOTH SYSTEMS NO FAULTS NOTED, OK FOR SERVICE, PN SET LOC40M SN ON 1255DAE OFF 209E