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Error code reference

KitchenAid Oven Error Code F104

Coil 1/2 Over Temperature.

KitchenAid codesKitchenAid oven codes

Coil 1/2 Over Temperature.

First step from the service manual

Switch OFF all loads except IPC power relay; manage cooling fan and door lock per dedicated paragraph.

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

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What F104 means on a KitchenAid oven

The F104 error code on a KitchenAid oven indicates an over-temperature condition detected at Coil 1/2. This refers to one of the induction or heating coil circuits monitored by the oven's control system. The IPC (Induction Power Control) power relay remains active while all other loads are switched off during the initial diagnostic procedure, which isolates the coil thermal fault from other electrical components. The control board monitors coil temperature continuously, and when the sensed temperature exceeds a safe operating threshold, F104 is triggered to protect the coil windings and surrounding components from thermal damage.

The most common cause of this fault is a failure in the cooling system responsible for keeping the coil assembly within its rated temperature range. The dedicated cooling fan must be functioning correctly and moving adequate airflow across the coil. If the fan motor is weak, seized, or blocked by debris, heat accumulates and the over-temperature threshold is crossed. The door lock mechanism is also managed as part of the F104 diagnostic sequence, meaning thermal runaway during a self-clean cycle or a door seal issue could contribute to elevated coil temperatures.

Diagnosis begins by shutting off all loads except the IPC power relay, then evaluating the cooling fan operation and door lock status per the dedicated procedures outlined for this fault. If the fan and door lock check out, the fault may point to a failing temperature sensor reporting incorrect readings, a defective IPC board mismanaging coil power, or an actual coil assembly that has developed a short or thermal degradation internally.

Source: manufacturer service documentation.

Common causes of F104

  1. 01

    Cooling Fan Failure

    Part replacement

    If the cooling fan motor is seized, running slowly, or obstructed, it cannot remove heat from the coil assembly, causing temperatures to spike and trigger F104. Check for fan blade obstruction, listen for abnormal motor noise, and verify the fan spins freely.

  2. 02

    Blocked Airflow Path

    Wiring / connection

    Grease buildup, debris, or a misaligned internal panel can restrict airflow to the coil area even if the fan itself is functional. Inspect all vents and internal air channels for obstructions and clean as needed.

  3. 03

    Faulty Coil Temperature Sensor

    Part replacement

    A temperature sensor that has drifted out of calibration or failed can report falsely elevated coil temperatures to the control board, triggering F104 even when the coil is within a safe range. Test sensor resistance against specification and replace if readings are out of range.

  4. 04

    Defective IPC Power Relay or Control Board

    Part replacement

    If the IPC power relay fails in a stuck-closed position, it can deliver continuous power to the coil beyond what the thermal management system expects, causing genuine overheating. The control board should be inspected for burn marks, failed components, or relay chatter.

  5. 05

    Coil Assembly Degradation

    Part replacement

    Internally degraded coil windings can develop localized hot spots or partial shorts that generate excess heat during operation. If all other components test correctly, the coil assembly itself may need replacement.

See the test procedure for each cause

Frequently asked questions about F104

What does F104 mean on a KitchenAid oven?
F104 indicates that Coil 1/2 has exceeded its safe operating temperature and the oven has shut down to prevent damage. The control system monitors coil temperatures continuously through dedicated sensors, and this code triggers when the thermal threshold is crossed. The initial diagnostic step involves switching off all loads except the IPC power relay and checking the cooling fan and door lock operation. The oven should not be operated again until the root cause is identified and corrected.
Can I fix the F104 error on my KitchenAid oven myself?
Some basic checks, such as inspecting the cooling fan for obstructions or cleaning blocked vents, can be performed by a knowledgeable DIYer. However, diagnosing and replacing components like the IPC power relay, control board, temperature sensor, or coil assembly typically requires electrical testing tools and familiarity with oven disassembly. If you are not comfortable working with high-voltage appliance components, a qualified technician should handle the repair.
Is it safe to use my KitchenAid oven when F104 is showing?
No, you should not attempt to use the oven while F104 is active. The error indicates a coil overheating condition, and continued operation could damage internal components or create a fire hazard. The oven's control system has shut down loads specifically to protect the appliance, and that protection should not be bypassed until the fault is fully resolved.
Will resetting the oven clear the F104 error code?
A power reset may temporarily clear the F104 code, but the error will return if the underlying cause has not been corrected. If the cooling fan is failing, the airflow is blocked, or a sensor is defective, the coil will overheat again under normal operation and retrigger the fault. A reset should only be used as part of a diagnostic process, not as a substitute for an actual repair.
How much does it cost to repair a KitchenAid oven with an F104 error?
Repair costs vary depending on the failed component. Cooling fan motor replacements typically range from around $100 to $250 including parts and labor. A temperature sensor replacement is generally less expensive, often in the $75 to $175 range. Control board or IPC relay replacements are more involved and can range from $200 to $450 or higher depending on parts availability and labor rates. Getting a diagnostic estimate from a certified technician before authorizing repairs is strongly recommended.

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