Written by
Jordan Avery Appliance Repair Content SpecialistPublished October 20, 2026
Content status:
Verified
Error codeTh
ApplianceDishwasher
Quick answer
Frigidaire dishwasher code Th explained: thermistor failure shown by a flashing display.
Model compatibility: Frigidaire has used more than one control platform, so Th may mean something different on another appliance or generation. Confirm this against your model documentation and record your full model number before acting.
Plain language
What this code means
Th is shown on a flashing display when a thermistor failure is detected.
Th explained
Th is a thermistor code. The display flashes it as soon as a thermistor failure is detected.
Series and models
Electronic series dishwashers FGHD2465NW and FGHD2465NB, according to service data sheet 154889701.
Who checks it
Nothing in the data sheet is addressed to owners. Because the document assumes trained readers, the thermistor itself is a job for a technician.
Compare with
Sensor and monitor codes on the same sheet include Tu (turbidity sensor) and RA (rinse aid monitoring).
Frigidaire dishwasher service in Miami, New York, Houston, Los Angeles and San Diego
Call (844) 455-3576 from any of those metro areas when Th flashes. The Frigidaire dishwasher repair page covers the visit; say which model you own and that the display shows Th.
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 repair visit for a clear estimate and approval before any work. Share the full model number and the exact code so diagnosis can start with the right path.
When a Frigidaire dishwasher stops working, start with the exact symptom, model number and any displayed code. The goal is to identify the failed system before parts are replaced.…
