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Error code reference

KitchenAid Oven Error Code F8

Oven door is open but latch is locked.

KitchenAid codesKitchenAid oven codes

Oven door is open but latch is locked.

First step from the service manual

Check door open/closed switch. Disconnect the switch and check continuity: door open = switch closed (0 Ω), door closed = switch open (∞).

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

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What F8 means on a KitchenAid oven

The F8 error code indicates a conflict between the door latch position sensor and the door open/closed switch. The control board is receiving a signal from the door switch indicating the door is open, while simultaneously reading the latch motor assembly as being in the locked position. These two states are mutually exclusive under normal operation, so the board flags F8 and halts normal function to prevent a potentially unsafe condition, particularly during or after a self-clean cycle where the latch engages.

For a homeowner: your oven's door has two separate sensing systems. One detects whether the door is physically open or closed, and another tracks whether the latch hook is engaged. When these two systems disagree, your oven throws the F8 code. Think of it like a car that shows a door-open warning even though the door is shut, because the sensor is faulty. The oven cannot confirm the door is safely secured, so it stops operating.

This conflict most often traces back to a failed door open/closed switch, a stuck or partially driven latch motor, or a wiring issue between these components and the control board. The door switch is the first component to test, since it is the most failure-prone part in this circuit and is accessible without major disassembly.

Source: manufacturer service documentation.

Common causes of F8

  1. 01

    Faulty door open/closed switch

    Part replacement

    The door switch has failed in the open position, sending the control board a constant 'door open' signal even when the door is physically closed. This is the most common trigger for F8 and is confirmed by testing continuity: with the door closed, a working switch should read infinite resistance, and with the door open it should read 0 ohms.

  2. 02

    Stuck or failed door latch motor assembly

    Part replacement

    The latch motor drove the latch hook into the locked position but failed to return it to unlocked, or the latch is mechanically jammed mid-travel. The control board reads the latch as locked while the door switch reports the door as open, creating the F8 conflict.

  3. 03

    Damaged or disconnected wiring harness to door switch

    Wiring / connection

    A broken wire, corroded connector, or chafed harness between the door switch and the control board can produce a false open-door signal. Inspect the harness routing along the door hinge area, where repeated flexing from door movement commonly causes wire fatigue and breaks.

  4. 04

    Failed electronic control board

    Part replacement

    If the door switch tests correctly and the latch assembly moves freely and returns to home position, the control board itself may be misinterpreting or failing to process the switch signals. This is the least likely cause but should be considered after all other components are verified.

See the test procedure for each cause

Frequently asked questions about F8

What does the F8 error code mean on a KitchenAid oven?
F8 means the control board is detecting a contradiction: the door latch is reading as locked, but the door open/closed switch is signaling that the door is open. These two states cannot both be true during normal operation, so the oven stops functioning until the conflict is resolved. The root cause is most often a defective door switch or a stuck latch motor assembly.
How do I fix an F8 error on a KitchenAid oven?
Start by testing the door open/closed switch with a multimeter set to continuity or ohms. Disconnect the switch and check it in both positions: door open should produce 0 ohms (closed circuit), and door closed should produce infinite resistance (open circuit). If the switch fails either reading, replace it. If the switch tests correctly, inspect the door latch motor assembly for mechanical binding or electrical failure, and examine the wiring harness between the switch and control board for breaks or corroded connectors.
Is it safe to use my KitchenAid oven while the F8 code is showing?
No. The F8 code indicates the oven cannot verify the status of the door latch, which is a safety-critical component, especially if the self-clean cycle was recently used. The control board typically disables oven operation when F8 is active for this reason. Do not attempt to bypass the error and use the oven until the faulty component has been identified and replaced.
My KitchenAid oven shows F8 after a self-clean cycle. Why?
Self-clean cycles engage the door latch motor to lock the door at high temperatures. If the latch motor fails to fully return to the unlocked home position after the cycle ends, or if the heat stressed the door switch, the control board will detect the latch-locked and door-open signal conflict and display F8. Manually check whether the latch hook has physically returned to the unlocked position before testing the door switch.
How much does it cost to repair an F8 error code on a KitchenAid oven?
A replacement door open/closed switch typically costs between $20 and $60 for the part, and is a manageable DIY repair if you are comfortable disconnecting a wire harness and using a multimeter. A door latch motor assembly ranges from $50 to $150 depending on the model. If a professional technician is needed, expect a service call fee of $75 to $150 plus labor and parts, bringing the total repair to roughly $150 to $350 in most cases. A control board replacement is the most expensive scenario, often $200 to $400 for the part alone.

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