Dacor Range, Oven, Cooktop Error Code L54

L54 indicates a fault with the relay board that controls the door latch mechanism on the lower oven. The relay board is responsible for switching power to the latch motor during self-clean and other door-locking operations. When the board fails to perform this function correctly, the control system logs the L54 code. The oven may refuse to enter or exit self-clean mode and the door could remain locked.

If the door latch is stuck in the locked position, you should not attempt to force the door open. Standard baking functions may still work if the door closes properly, but using self-clean mode while the relay board fault is active is not recommended. Addressing the underlying board or latch issue before regular use helps prevent further damage to the control system.

Power cycling the oven by disconnecting it from power for several minutes may temporarily clear the L54 code, but the fault will return if the underlying relay board or latch problem is not corrected. A reset does not repair a failed relay, burned board component, or defective latch motor. Clearing the code without addressing the root cause can delay proper diagnosis and may result in the door becoming locked again unexpectedly.

A knowledgeable DIYer can attempt to resolve L54 by inspecting the relay board for visible damage, reseating wiring connectors, and checking the latch motor for continuity. However, if the relay board itself has failed, it will need to be replaced, which requires disconnecting power, accessing the control cavity, and correctly handling the wiring harness. If you are not comfortable working around oven wiring, a qualified technician is the safer option.

Repair costs depend on which component has failed. A replacement relay board for a Dacor oven typically ranges from around $80 to $250 for the part alone. Adding professional labor, total repair costs commonly fall between $150 and $400 depending on your location and the technician's rates. If both the relay board and latch motor require replacement, costs will be toward the higher end of that range.