As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FA REPORTS EXIT SIGNS ABOVE AFT GALLEY AND AFT LEFT EXIT DOORS GOING ON AND OFF INTERMITTANTLY. GROUNDED - YES. GROUND VERIFIED AFT GALLEY EMERGENCY EXIT SIGNS AND AFT DOORS EXIT SIGNS REF B737-800 FIM 33-50 TASK 801. OPS CHECK GOOD. NO DEFECTS NOTED.