As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED SMOKE IN THE COCKPIT AND CABIN ON CLIMB. THEY ALSO REPORTED A LAV SMOKE LITE WARNING. THE AIRCRAFT RETURNED TO EWR AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE NR 1 ENGINE AND OPERATIONAL CHECKS WERE GOOD.