Wolf Oven Error Code Oven Light relay open

This error means the relay that controls the interior oven light on the relay module is stuck in the open position and cannot complete its circuit. The oven's control system has detected that the relay is not functioning as commanded. This fault typically requires inspection of the wiring connections to the relay module, followed by replacement of the relay module if connections are found to be intact.

The error is specifically tied to the oven light circuit, so the oven's core cooking functions such as baking, broiling, and temperature control are typically unaffected. In most cases the oven remains safe to operate for cooking, but the interior light will not work. It is still advisable to have the fault diagnosed and repaired promptly to prevent potential issues with the relay module affecting other circuits over time.

Performing a power reset by turning off the oven's circuit breaker for a few minutes may temporarily clear the error code from the display. However, if the relay on the relay module is physically stuck open or the wiring connection is faulty, the error will return once the oven runs a diagnostic cycle. A reset alone does not correct the underlying hardware fault and is not a substitute for proper diagnosis and repair.

A knowledgeable DIYer can start by checking and reseating all wiring connections to the relay module, which sometimes resolves the fault if a loose connector is the cause. However, if the relay module itself has failed, replacing it involves working with line-voltage wiring inside the oven and requires confidence with electrical repairs. If you are not comfortable with this level of work, a qualified appliance technician should perform the replacement.

If the relay module requires replacement, parts costs for Wolf relay modules typically range from roughly $150 to $350 depending on the specific model. Adding professional labor, the total repair cost generally falls in the range of $250 to $550. If the fault is simply a loose wiring connection, the repair cost is limited to a service call fee.