As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNABLE TO RESET PACK OFF LIGHT. RTB CLEANED FLOW CONTROL VALVE C/P ALSO LUBRICATED AXLE VALVE AT THE MANUAL OVERRIDE. RAN PACK WITH APU AIR SOURCE OPS CHECKS NORMAL. ALSO OPERATED RT PACK WITH RT ENG AIR SOURCE. ALL OPS NORMAL. NO FAULT HISTORY. ETOPS CATEGORY 'E': PROBLEMS WITH SYSTEMS CRITICAL TO ETOPS