Viking Range Error Code Cycle 4 flashes / Clean ON

This error code indicates a Fan Hall error detected by the self-cleaning oven control board on Viking 30", 36", and 48" RH oven models. The control board monitors a Hall effect sensor on the fan motor to confirm the fan is spinning during the self-clean cycle. When the expected sensor signal is absent or invalid, the board triggers this fault and stops the clean cycle. The root cause can be a failed sensor, wiring issue, bad fan motor, or a defective control board.

You should avoid running the self-clean cycle while this error is active, as the fan monitoring system has detected a fault that caused the cycle to stop. Normal baking and cooking functions may still operate, but continued use without diagnosing the underlying fan or sensor issue could risk inadequate cooling during high-heat operation. It is best to resolve the fault before attempting another self-clean cycle.

Resetting the range by disconnecting power for several minutes may temporarily clear the error display, but the fault will return if the underlying cause has not been corrected. Because this error is triggered by the control board detecting a real signal problem during the self-clean cycle, the issue needs to be physically diagnosed and repaired. A reset is useful for confirming whether the fault is intermittent, but it is not a permanent fix.

Some steps, such as inspecting and reseating wiring harness connectors, can be performed by a confident DIYer after disconnecting power to the range. However, replacing the Hall effect sensor, fan motor, or control board requires comfort working with appliance electrical components and identifying the correct model-specific parts. If you are unsure, a qualified appliance technician is recommended, particularly because this fault involves the high-temperature self-clean system.

Repair costs vary depending on the failed component. A Hall effect sensor or wiring repair is generally on the lower end, while a fan motor replacement falls in a mid-range cost. A control board replacement is typically the most expensive option, with parts and labor potentially totaling several hundred dollars. Getting a diagnostic service call first will help identify exactly which component needs replacement before committing to a repair cost.