As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GENERATOR PROBLEM, FLIGHT DIVERTED. FLICKERING OF LIGHTS IN CABIN. FA PANELS FWD AND AFT AND PAX LIGHTS. DEBRIEFED CABIN CREW, THE ONLY LIGHTS FLICKERING WERE DOOR 1L READING LIGHT & THE 2L READING LIGHTS. ALL CABIN LIGHTING OPS NORMAL. CIDS TEST NORMAL. FLIGHT CREW REPORTS ALL VOLTS AND FREQS NORMAL. ALL DISPLAYS NORMAL.