KitchenAid Oven Error Code F8

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.

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.

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.

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.

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.