Viking Oven Error Code F1

F1 on a Viking oven indicates a shorted RTD temperature sensor circuit. The RTD probe is responsible for measuring oven temperature and communicating that data to the Thermostat Timer control. When the circuit shorts, resistance drops abnormally low and the control locks out to prevent unsafe operation. The fault points to the probe, its wiring harness, or the control board terminals.

No, you should not use the oven while F1 is active. The error means the control cannot accurately read oven temperature, so the oven could overheat or operate unpredictably. The fault is a safety lockout and the underlying cause should be diagnosed and repaired before resuming use.

Resetting the oven by cutting power at the breaker may temporarily clear the F1 display, but the code will return as soon as the control detects the shorted probe circuit again. A reset does not fix the underlying electrical fault. The RTD probe circuit must be tested and the shorted component repaired or replaced to permanently resolve the error.

A knowledgeable DIYer can perform the initial resistance test by disconnecting the wires at Thermostat Timer terminals AT5 and AT6 and measuring resistance with a Volt-Ohm meter. If the probe or wiring is confirmed faulty, replacing the RTD probe is a straightforward repair that involves disconnecting the old probe and installing a replacement. However, if the Thermostat Timer control board is the source of the fault, that replacement is more complex and many homeowners prefer to have a technician handle it.

Costs vary depending on which component has failed. A replacement RTD probe typically runs in the range of $20 to $80 for the part, while a Thermostat Timer control board can range from $150 to $400 or more depending on the model. Adding professional labor, total repair costs commonly fall between $100 and $500. Performing the resistance test first helps identify the faulty component before spending on parts.