Written by
Daniel Reyes Appliance SpecialistPublished October 20, 2026
Error codeTu
ApplianceDishwasher
Quick answer
Tu on Frigidaire electronic series dishwashers FGHD2465NW/NB: a detected turbidity sensor failure.
Model compatibility: Frigidaire reuses codes across series and model years, so Tu may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Tu flashes on the display when a turbidity sensor failure is detected.
If Tu flashes on a Frigidaire electronic series dishwasher, a turbidity sensor failure has been detected.
Which dishwashers
Service data sheet 154889701 documents the code for electronic series models FGHD2465NW and FGHD2465NB.
Owner or technician
The data sheet is written for trained appliance repair readers and lists Tu only as a display code. Sensor checks are therefore for a technician.
Dishwasher flashing Tu in Los Angeles? Call (310) 861-3938 or visit the dishwasher repair section. The display code and model number are the details to have ready.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Frigidaire appliance?
Book a specialist visit for a clear estimate and approval before any repair.
