As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED OF FLIGHT DUE TO DURING TAKEOFF THE FUEL UNBALANCE LIGHT TURNED ON. DURING MX REVISION, THE FAILURE CODES 28-41109 & 28-4115 WERE DETECTED IAW AMM 28-41-00, SO THE REPORT WAS DEFERRED IAW MEL 28-6 CAT C. AN OVERWEIGHT INSPECTION WAS PERFORMED IAW MM 05-51-35-210-801 PHASE I A NO DAMAGES WERE FOUND. AT MEX, MX REPLACED THE FUEL QTY PROCESSOR UNIT IAW AMM 28-41-81-000-801, TESTED CORRECT.