The answer up front
What F03 tells you is that the electronic oven control and its wiring did not answer the control's own self-check. It may restart and finish a cycle, but a code that returns on its own is telling you the board is not answering reliably. Start with a brown-out or a surge during a cycle, which a full power-down clears rather than with a part.
The documented code reading
Reference| Code | Documented meaning |
|---|---|
| F03 | There may be a problem with the Electronic Oven Control, or the associated wiring. |
What the appliance does alongside the code
- The code returns within minutes of a reset — A one-off glitch stays away after a power-down.
- More than one code has appeared over the last few weeks — Several unrelated codes from one appliance is usually a supply or a connection story, not several faults.
- NEAR MISS - the panel is completely dark — No display at all is a supply or a low-voltage fault, and it is a different page.
The ranked causes behind this reading
- A supply disturbance that left the control latched — First because it is the only cause on this list an owner can clear: the board is fine, its stored state is not, and a full power-down is the whole repair.
- A shared circuit with something heavy on it — Worth ruling out early: a motor or a heater starting on the same circuit drags the supply for a moment, and a control that sees that at the wrong instant records it as its own failure.
The check order this code implies
- Note whether the code returns on its own or only under load — A code that waits for a heavy load is a supply question; one that returns at idle is not.
- Leave the board itself to a technician — Everything above is free; what follows is a meter on low-voltage rails and a board price.
What you can do without tools
- Power the machine down at the breaker, then bring it back up — This is the documented first action and it clears the benign case outright.
About 5 min
- Keep a note of every code and when it appeared — Two codes with a pattern are worth more to a technician than one code with none.
About 5 min
- STOP HERE - do not open the control housing — Board work means live low-voltage rails behind a panel, and the diagnosis needs the wiring diagram for that model line.
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 to stop and call someone
The free checks above come first; past them this is a visit. Call when the code returns after a full power-down, or returns a second time: a repeating control fault is diagnosed with the wiring diagram for that model line and is not an owner repair.
The nearest codes in this set
What this page does not cover
What this page covers is the code as documented for the model lines that carry this control on this platform. It is general information about one reading, not a service manual for your unit: torque figures, connector pinouts and part numbers vary by family and are not printed here for that reason. Where a family-specific or model-specific page exists, it is the closer answer - start there, and use the index below to find it.
The full code index for this appliance
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
