What this code means, briefly
Read F58 as this: there may be a problem with the cooktop power control board, or with the wiring associated with it. Treat the cooktop as out of use: the board this reading names is the one that switches power to the zones. You can settle whether this is a one-off or a real fault yourself; naming the failed part is not owner work.
Error codes
Reference| Code | Meaning |
|---|---|
| F58 | There may be a problem with the Cooktop Power Control Board, or the associated wiring. |
What you actually observe
- A zone cuts out under load rather than refusing from cold — A connection that fails as current rises behaves exactly like that.
- The code appears at the same point in every cycle — A repeatable trigger point means the control is failing the same check each time, which is useful evidence.
- NEAR MISS — several unrelated functions are out at once — That is upstream of the cooktop power control board — a supply or a control fault — and it is not this code.
What triggers F58, most likely first
- A high-current connection running hot at the board — It goes first because these are the heaviest connections in the appliance and the reading covers them: one that has loosened heats under load, and heat makes it worse, which is why it is found before the board is judged.
- A failed the cooktop power control board — It sits here rather than first because the code does not distinguish it from its wiring, and the wiring is cheaper to eliminate.
What to check first, second, third
- Ask whether anything smells hot after use — A hot smell near a high-current connection is a reason to stop using the appliance now rather than later.
- Have the harness to the cooktop power control board inspected where it flexes — Chafe marks and green pins are found by eye once the panel is off, before a meter is needed.
- Have the cooktop power control board measured at the control connector — One measurement at the board end tests the part and its wiring together, which is exactly what the code covers.
What an owner can safely do
- Cut power at the breaker for a full minute and restore it — This clears a stored fault. A code that returns on the next cycle is live and needs the panel off.
About 5 min
- Switch off at the breaker, then note which zones failed and whether anything smelled hot — If there is any smell of heat or burning, leave the appliance isolated until it has been looked at.
About 10 min
- Use the appliance the same way again and note the exact moment the code lands — The trigger point is the most useful thing you can hand a technician, and it costs one session to get.
About 45 min
- STOP HERE — the cooktop power control board and its wiring are behind a panel — Everything past this point is work next to live terminals, which is where an owner check ends.
Safety first
Safety
Isolate the cooktop at its circuit breaker before any panel comes off — a capacitor can hold a charge after the power is off, and this is a fixed high-current appliance rather than one you unplug. Put nothing cold or wet on hot glass. On a gas model, if you smell gas, leave the building and call the gas utility from outside.
When to call a technician
Call straight away if the appliance behaves unpredictably rather than simply missing one function, or if you can see or smell heat damage at a connector.
Nearby codes on the same appliance
Scope of this reading
What is written here is generalized to the KitchenAid cooktop line rather than to a single family. Deliberately absent: connector positions, wiring colours, part numbers and the service sequences for your particular build, all of which vary across the line and belong in the manual for your model. If a model-specific page for this code has been published it is linked from the index below, and that page outranks this one for your unit.
Links: - [KitchenAid cooktop error codes](/blog/kitchenaid-cooktop-error-codes)
The code index
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
