Kenmore Range Error Code 4d12

Error code 4d12 means the control board detected that the lower oven door switch did not confirm a closed, locked position when the door locking sequence was initiated. As a result, the range disables both the self-clean function and the door locking mechanism until the issue is resolved. The most likely causes are a failed door switch, a latch assembly that is not fully engaging, or a wiring problem in the circuit.

Normal baking and broiling functions are generally not disabled by code 4d12, but the self-clean cycle and door locking function will not operate. You should avoid forcing the self-clean cycle or the door lock manually while the fault is present. Addressing the underlying cause promptly is the safest approach, particularly because the door latch is a key safety component during high-temperature operation.

Repair costs vary depending on which component has failed. A door switch replacement is typically an affordable repair, with parts generally ranging from around $15 to $50 and labor adding more if a technician is hired. A latch motor or full latch assembly tends to cost more, with parts ranging from $40 to $120 or higher depending on the model. If the wiring harness needs repair or replacement, labor time increases the total cost.

Many of the causes behind code 4d12 are approachable for a technically confident DIYer. Checking and reseating wiring connectors at the door switch requires no special tools. Testing the door switch for continuity with a multimeter and replacing it if faulty is a common repair. However, if the latch motor or control board is involved, some technicians prefer to leave those repairs to a professional.

Resetting the range by cycling the breaker or unplugging it may temporarily clear the display, but the code will return if the underlying fault with the door switch, latch assembly, or wiring has not been corrected. A reset is useful for confirming whether the fault is intermittent, but it does not substitute for diagnosing and repairing the root cause.