The short answer
This code says the oven temperature sensor or the control and the wiring between them stopped answering with a value the control treats as plausible. The control stops the heat rather than work from a reading it cannot trust, so the cycle will not finish while the code stands.
The code and what the manufacturer documents for it
Reference| Code | Documented meaning |
|---|---|
| F3-1 | There may be a problem with the Oven Temperature Sensor, the Control, or the associated wiring. |
The observable side of this fault
- The code appears and the cycle stops heating — Everything else looks normal — lights, fan, display — and only the heat is missing.
- The fault comes and goes with temperature — An intermittent connection opens as the metal expands and closes again when it cools, which is why the code often arrives part-way through a long cycle.
- NEAR MISS - nothing heats and no code shows at all — That is a power or element fault rather than a reading fault, and it belongs on the page for that symptom.
What produces this code, likeliest first
- A loose or corroded connector at the sensor — Ranked first because it is the failure that needs no part: the probe is fine, the joint carrying its signal is not, and heat cycling at the back of the cavity is what works a pin loose.
- A chafed or pinched harness between the probe and the board — Third: a wire rubbed through against sheet metal reads exactly like a failed probe from the board's side, which is why the harness is checked before the board is condemned.
What to check first, second and third
- Power the machine down fully and see whether the code returns — Costs nothing and separates a latched one-off read from a live fault.
- Only then treat the board as a candidate — Order matters because every check above is free and the board is not.
Steps you can take yourself
- Clear the code with a full power-down — A code that does not return was a single bad read.
About 5 min
- Run the shortest cycle the appliance offers and watch for the code — A short cycle that stays clean while a long one fails tells a technician the fault is thermal.
About 20 min
- STOP HERE if the next step is a meter across the probe terminals — That means a panel off and a connector back-probed, which is where an owner check ends and a service call begins.
Read this before touching anything
Safety
Unplug the appliance or switch off its breaker before removing any panel - a capacitor can hold a charge after the power is off. Leave every switch and interlock wired as the manufacturer fitted it: they are what stops the appliance running in a state it should not.
When a reset is not the answer
Where an owner stops: call once the code survives a full power-down: a repeatable reading fault is a probe, a harness or a board, and telling those three apart needs a meter and the resistance table for that model line. And where nobody should wait at all: call straight away if you smell hot insulation or see discoloured wiring at the back — a connector hot enough to discolour is arcing, and that is a different and more urgent problem than the reading the code named.
Other codes on the same appliance
What this page does not cover
Applies to: the model lines that use this probe on this cavity. This page is the general reading of one code; where a more specific page exists for your family or model it is linked from the index below and it is the one to read first.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
