Viking Range Error Code Runaway Oven Temperature

This fault means the oven control detected that the cavity temperature exceeded 650°F and held that level for more than 10 minutes while the door was unlocked. It is a safety protection feature designed to shut down operation before damage or a fire hazard occurs. The control could not regulate temperature properly, pointing to a problem with the RTD temperature sensor, its wiring, or the EOC control board.

A power reset may clear the displayed fault code temporarily, but it will not fix the underlying problem. If the RTD, wiring, or EOC is defective, the runaway condition will recur as soon as the oven is used again. A proper repair requires physically testing the RTD for open, shorted, or grounded conditions before returning the range to service.

Repair costs vary depending on the failed component. RTD sensor replacement typically runs in the range of $50 to $150 for the part, while an EOC control board can cost between $200 and $600 or more depending on the model. Adding professional labor, total repair costs commonly fall between $150 and $800. Diagnosing the specific failed component first will prevent unnecessary parts replacement.

No, the oven should not be used until the fault has been diagnosed and repaired. A runaway temperature condition means the oven may not respond to your set point and could reach dangerously high temperatures. Power the unit down at the breaker or shut off the gas supply until a qualified technician can inspect the RTD, wiring, and control board.

Start by powering down the unit and testing the RTD sensor probe for open circuits, shorts, or grounding faults, along with a full inspection of the RTD wiring harness and connectors. If the RTD and wiring test within normal parameters, the next step is replacing the EOC control board. On gas models, the oven safety valve should also be evaluated if the other components check out.