Dacor Oven Error Code L54

L54 indicates a lower latch and door lock enable failure. The lock enable output is either active when oven temperature is below 440°F, or it is not active when the temperature exceeds 650°F. This fault is specific to the self-clean door lock circuit and requires inspection of the relay board and associated wiring.

Normal baking and cooking functions may still operate, but you should not attempt to run a self-clean cycle while this error is present. The L54 fault means the door lock system is not functioning correctly, and running a self-clean cycle without a reliable door lock is a safety hazard due to the extreme temperatures involved.

Repair costs vary depending on whether you hire a technician or do the work yourself. A replacement relay board typically ranges from $80 to $200 or more depending on the specific model. If a technician is hired, labor costs can add $100 to $250 or more to the total, depending on your location and the service provider.

The primary repair is replacing the relay board, which is a task that requires disconnecting power to the oven and some comfort working with appliance electronics. A knowledgeable DIYer can perform this repair, but if you are not comfortable working inside the oven's control cavity, a qualified technician is recommended. Always disconnect power before beginning any repair.

A power reset by disconnecting the oven from its power source for several minutes may temporarily clear the code, but it will return if the underlying fault in the relay board, wiring, or lock assembly is not repaired. A reset alone does not fix the root cause of the lock enable failure.