Written by
Hannah Ostrowski Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeTh
ApplianceDishwasher
Th, the thermistor code
Th flashes on the display whenever the dishwasher detects that its thermistor has failed.
Models
Electronic series dishwashers FGHD2465NW and FGHD2465NB. The document is data sheet 154889701.
Handing it over
The data sheet addresses people trained in electrical and mechanical work and offers owners no steps. Checking the thermistor is therefore a technician’s job.
Our Frigidaire dishwasher repair page covers San Francisco, or ring (415) 319-6371. Share the model number and note that Th was flashing so the right visit can be planned.
Model compatibility: Frigidaire reuses codes across series and model years, so Th 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
A flashing Th reports a detected thermistor failure on the FGHD2465NW/NB electronic series.
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.
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