As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH FLT THE CREW REPORTED A LAV SMOKE MESSAGE ON THE ECIAS AFTER TAKEOFF AT 3000FT. THE MESSAGE CLEARED AFTER THE CB E11 AND 12 WERE PULLED. THE ACFT RETURNED TO DEPARTURE AND LANDED WITHOUT INCIDENT. MX REPLACED THE NR 2 ENG AND OPS CHECKS WERE GOOD. SUPPLEMENT TO FOLLOW.