KitchenAid Range Code 4d12: Door switch and latch wiring

What 4d12 means

If your KitchenAid range displays 4d12, the message is that there may be a problem with the oven door latch assembly, the door switch, or the associated wiring. It is the twin of 4d11 in the lower-case 4d group. The usual picture is a door that looks closed while the oven acts as though it is not, so heating or a lock cycle will not begin.

Common causes of 4d12

Door switch that does not report the door as closed
Door latch assembly that sticks or fails to engage
Wiring running to the latch or switch

✓ One safe check you can try

1. Turn the oven off and open the door all the way. 2. Check that no pan, rack or foil edge is sticking out where the door closes. 3. Shut the door gently and listen for it to seat. 4. Switch the range breaker off for a minute and back on. 5. Try a short bake. If 4d12 returns, stop and call us.

! Why to stop there

Door parts are exposed to heat on every cycle and wear in ways you cannot see from outside.
Checking a switch or latch means working in the door and frame, which is not owner work.
We quote in writing before we begin and give a 30-day workmanship warranty.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Range codes

White Blinking LightsKitchenAid Range Message "White Blinking Lights": oven waiting at Start WiFi Indicator LightKitchenAid Range Message "WiFi Indicator Light": connectivity status lamp Press Cancel to ResetKitchenAid Range Message "Press Cancel to Reset": Clear the Error Probe or Insert ProbeKitchenAid Range Display "Probe" or "Insert Probe": Meat Probe Needed PUSH or PSHKitchenAid Range Display "PUSH" or "PSH": Start Not Pressed Remote Indicator LightKitchenAid Commercial-Style Range Remote Indicator Light: Remote-Enabled Sabbath ModeKitchenAid Range "Sabbath Mode": Bake Stays On Sabbath, Sab, 5Ab, or 5A7KitchenAid Range Code Sabbath, Sab, 5Ab, or 5A7: Sabbath Mode is on

4d124d12 questions

Why does the oven act as if the door is open?

The control relies on the door switch to know the door is closed. If the switch, latch or wiring is not giving a good signal, the oven can behave as if the door were open.

Does 4d12 differ from 4d11?

The message is the same: latch assembly, door switch or wiring. The final digit separates the two entries, but the checks a technician makes are alike.

Can I keep baking with the door held shut?

No. Holding or taping a door is unsafe and will not clear the code. Leave the oven off and call us so the latch area can be tested properly.