As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED LAV SMOKE WARNING AFTER TAKEOFF. THIS OCCURRED 60 SECONDS AFTER TRANSITION FROM APU BLEED TO ENGINE BLEEDS. AIRCRAFT RETURNED TO NEWARK AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND SMOKE SMELL WITH BLEEDS ON AFTER TAKEOFF POWER OBTAINED. APPEARS TO BE STRONG OIL SMELL FROM NR 2 ENGINE. AIRCRAFT FERRIED TO TYS FOR FURTHER TROUBLESHOOTING. ENGINE REPLACED AND AIRCRAFT RETURNED TO SERVICE.