Viking Range Error Code A/D Stuck LED (Cycle light 3 flashes then 4s OFF, Clean light ON)

This error means the analog-to-digital converter on your Viking self-clean oven control board has become stuck and is not processing input signals correctly. The Cycle light flashes three times followed by a four-second pause while the Clean light stays on to indicate this specific fault. It most commonly points to a problem with the oven temperature sensor or the control board itself.

It is not recommended to use the oven while this error is active, especially the self-clean function. Because the A/D converter is responsible for reading oven temperature, a stuck error means the control board may not be accurately monitoring heat levels. Continuing to operate the oven in this condition could result in overheating or unreliable temperature control.

Repair costs depend on the root cause. An oven temperature sensor is generally a lower-cost part, with the sensor itself typically ranging from $30 to $80, plus labor if a technician is performing the repair. A replacement self-clean oven control board is significantly more expensive, often ranging from $200 to $500 or more for the part alone, with additional labor costs on top of that. Getting a diagnostic service call from a Viking-authorized technician can help confirm which component needs replacement before committing to parts costs.

A knowledgeable DIYer can start by checking the oven temperature sensor using a multimeter to verify its resistance is within the correct range. Inspecting the wiring harness for loose or damaged connections is also a reasonable first step. However, if the sensor and wiring are both good, replacing the control board typically requires familiarity with appliance electronics and proper safety precautions, so professional service may be advisable at that stage.

A power reset by turning off the circuit breaker for 30 to 60 seconds may temporarily clear the error, but it will almost certainly return if the underlying cause has not been addressed. If the oven temperature sensor is faulty or the control board has a hardware fault, the error will reappear once the oven attempts to operate again. A reset alone is not a repair.