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Error code reference

KitchenAid Oven Error Code F58

Coil 1/2 NTC shorted

KitchenAid codesKitchenAid oven codes

Coil 1/2 NTC shorted – coil NTC reads over 240°C for at least 1 second.

First step from the service manual

Failure is cleared when temperature lower than 240°C is detected for at least 1 second. Switch OFF all loads except IPC power relay.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F58 means on a KitchenAid oven

The F58 error code on a KitchenAid oven indicates a shorted condition in the Coil 1/2 NTC (Negative Temperature Coefficient) thermistor circuit. Specifically, the fault triggers when the NTC sensor reads a temperature above 240°C for a continuous period of at least one second. NTC thermistors are resistive sensors whose resistance decreases as temperature rises. A shorted NTC circuit causes the control board to interpret an artificially elevated or maximum temperature reading, which it treats as a dangerously overheated coil condition and flags as a fault.

The coil NTC sensor is responsible for monitoring the temperature of the induction coil assembly in KitchenAid induction cooking systems. Under normal operation, this sensor feeds real-time thermal data to the IPC (Induction Power Control) system, which uses that data to regulate power delivery to the coil. When the NTC shorts internally or experiences a wiring fault, the sensor output collapses to a very low resistance value, which the control interprets as an extreme over-temperature condition exceeding the 240°C threshold.

The fault clears automatically once the detected temperature drops below 240°C for at least one second. The recommended first diagnostic step is to switch OFF all loads while leaving the IPC power relay energized. This isolates the coil circuit from active power draw, allowing the control system to reassess the NTC reading without interference from operating loads. If the fault persists after cooling and load isolation, the NTC sensor itself, its wiring harness, or the IPC control board should be inspected for damage or short circuits.

Source: manufacturer service documentation.

Common causes of F58

  1. 01

    Shorted NTC thermistor

    Part replacement

    The Coil 1/2 NTC thermistor itself has failed internally, causing its resistance to drop to near zero and reporting a false over-temperature reading above 240°C. Measuring the thermistor resistance with a multimeter will confirm a short if the reading is extremely low or zero ohms.

  2. 02

    Damaged NTC wiring harness

    Part replacement

    The wiring connecting the NTC sensor to the IPC control board may have pinched, melted, or frayed insulation causing a short to ground or to another conductor. Visually inspect the harness for burn marks, abrasion, or contact with hot surfaces.

  3. 03

    Actual coil overheating event

    Wiring / connection

    In some cases the induction coil genuinely reached an over-temperature condition due to blocked ventilation, a failed cooling fan, or extended high-power operation. Check that all vents are clear and that the cooling fan operates when the unit is powered.

  4. 04

    Faulty IPC control board

    Part replacement

    If the NTC sensor and wiring test within normal specifications, the IPC power control board itself may be misinterpreting the sensor signal due to a failed input circuit or damaged board component. This is typically confirmed only after ruling out the sensor and wiring.

  5. 05

    Poor connector contact at NTC circuit

    Wiring / connection

    Corroded or loose connector terminals at the NTC sensor plug or at the IPC board connector can cause erratic resistance readings that trigger the over-temperature fault. Inspect and reseat all connectors in the NTC circuit and check for corrosion or fretting.

See the test procedure for each cause

Frequently asked questions about F58

What does F58 mean on a KitchenAid oven?
F58 indicates that the Coil 1/2 NTC thermistor has reported a temperature above 240°C for at least one second, which the control system interprets as a shorted sensor or an overheated induction coil. The oven shuts down the affected circuit as a protective measure. The fault may reflect a genuine overheating event or a failed sensor that is producing a false reading.
Can I fix an F58 error myself, or do I need a technician?
Some basic checks, such as inspecting wiring, reseating connectors, and verifying ventilation, can be performed by a knowledgeable DIYer. However, testing and replacing the NTC thermistor or the IPC control board requires disassembly of the appliance and comfort working with electrical components. If you are not experienced with appliance electronics, a qualified technician is recommended.
Is it safe to keep using my KitchenAid oven when F58 is displayed?
No, you should not continue using the oven while this fault is active. The F58 code indicates either a shorted temperature sensor or a genuine overheating condition in the induction coil circuit. Continuing to operate the unit before resolving the fault could result in further component damage or a safety hazard.
Will resetting the oven clear the F58 error code?
The F58 fault clears automatically when the NTC sensor reads a temperature below 240°C for at least one second. Power cycling the oven may temporarily clear the display, but if the underlying fault in the NTC sensor or wiring remains, the error will return as soon as the unit attempts to operate. A reset alone does not fix the root cause.
How much does it cost to repair an F58 error on a KitchenAid oven?
Repair costs depend on the failed component. Replacing the NTC thermistor sensor is generally the least expensive fix, with parts typically in the range of $20 to $80 and a modest labor charge if a technician is involved. If the IPC control board requires replacement, total repair costs including labor could range from $200 to $500 or more depending on your region and the specific model.

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