Affected model seriesmodern dishwasher F-code service family
Quick answer
Temperature-sensor failure.
Model compatibility: GE reuses codes across series and model years, so F51 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
Temperature-sensor failure.
Signs
Symptoms you may notice
Temperature-related performance can become inconsistent.
Fans or heating/cooling loads may cycle abnormally.
The code may return shortly after startup or during the affected cycle stage.
Food/cabinet/cavity temperature may be outside the set range.
Why it happens
Possible causes
A fan, heater, compressor-related, or relay/control problem depending on the appliance.
Wiring damage between the sensor and the main control.
An open, shorted, corroded, or loose sensor connection.
A control fault that mismanages temperature after the physical system is checked.
Moisture/temperature conditions affecting the sensor circuit.
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
Note whether the code appears immediately or only after heating/cooling begins; that timing is useful for diagnosis.
Do not disconnect internal sensors just to “test” whether the code clears; that can create additional faults.
If temperature continues to move in the unsafe direction, stop relying on repeated resets and arrange diagnosis.
Allow for recovery after a large warm load or long door opening before judging a one-time temperature event.
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 GE appliance?
Book a specialist visit for a clear estimate and approval before any repair.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
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Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
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