Thermador Range Error Code F41

F41 indicates that the upper or single oven motorized door latch failed to complete its locking cycle. The oven's control system could not confirm the door reached the locked position, which is required before a self-clean cycle can proceed. On Sago-platform Thermador models, this code can also indicate that the upper oven meat probe is not properly calibrated. The fault points to the latch motor, door latch switches, associated wiring, or the Power Board.

Standard cooking functions may still operate with an F41 fault present, but you should not attempt to run a self-clean cycle until the latch issue is resolved. A self-clean cycle reaches very high internal temperatures and relies on a confirmed door lock for safety. Continuing to use the oven for baking or broiling is generally low risk, but address the fault before attempting any high-heat cleaning cycle.

Repair costs vary depending on which component has failed. A latch motor or switch assembly replacement typically falls in the range of $150 to $350 in parts and labor. Power Board replacement is more expensive, generally ranging from $300 to $600 or more depending on the model and labor rates in your area. If the repair is limited to reseating a connector or repositioning a pinched wire, the cost may be just a service call fee.

Some basic checks are within reach for a knowledgeable DIYer, including reseating the P4 and P10 connectors on the Power Board and inspecting the latch wiring harness for pinched or damaged wires. Testing the door latch switches requires a multimeter and some familiarity with appliance wiring. If the fault traces to the latch motor assembly or the Power Board itself, those repairs are more involved and may be better handled by a qualified technician.

Disconnecting the range from power for a few minutes and restoring it may temporarily clear the F41 code, but the fault will return if the underlying problem is not corrected. If the latch motor, wiring, or switches are faulty, the error will reappear as soon as the self-clean function is attempted again. A reset is useful for confirming whether the fault is intermittent, but it is not a repair.