As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AIRCRAFT 3140, L/P 7060653) CABIN EMERGENCY LIGHTS CAME ON UNCOMMANDED DURING CRUISE WITH THE SWITCH IN ARM. ALL ELEC BUSSES ARE POWERED. LIGHTS CAN BE TURNED OFF WITH SWITCH IN OFF. CORRECTIVE ACTION: PER A319 AMM TSM 33-51-00-810-881-A, NO CFDS POST FAULT NONE OPS TESTED CIDS-1/AWD DEV-B.