As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF OF FLIGHT NR 3076, BITE LIGHT ILLUMINATED, LIGHT REMAINS ON AFTER LANDING. AIR RETURN TO DTW. MAINTENANCE COULD NOT DUPLICATE PROBLEM ON THE GROUND. REMOVED AND REPLACED WEU ASSEMBLY FOR PRECAUTIONARY MEASURE. ALL CHECKS GOOD.