Viking ERC Oven Code F4: shorted oven sensor circuit

What F4 means

On older Viking ERC built-in ovens such as the VEDO273 electric and VGDO271 gas, F4 means the control detected a shorted sensor or a shorted sensor circuit. The standard check is the sensor resistance and the wiring that carries it. The oven cannot read its own temperature, so it stops heating and holds F4 on the display until the sensor circuit is corrected.

Common causes of F4

Oven sensor shorted
Sensor wiring pinched or damaged
Connector problem

✓ One safe check you can try

1. Turn off the oven and let it cool. 2. Turn off the breaker for a minute, then restore it. 3. Try a short bake at a low temperature. 4. If F4 returns, stop using the oven and call us. We check the sensor resistance with a meter; if you have a gas oven and smell gas, leave the house and call the gas utility from outside.

! Why to stop there

Resistance and wiring checks require access behind the oven
A shorted sensor reads wrong even if the oven still powers up
We quote in writing first, with a 30-day warranty

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

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F4F4 questions

How is F4 different from F3?

F3 on ERC ovens is an open sensor, while F4 is a shorted sensor. Both leave the control without a temperature, but the repair test is different for each.

Is it the sensor or the wiring?

Either one can cause a shorted circuit. We check the sensor resistance and the wiring before replacing parts, and we quote the price in writing before ordering anything.

Will the oven turn on with F4 showing?

It may light up and respond to keys, but it will not heat reliably. Do not rely on it for cooking until the shorted circuit has been repaired.