F + number or letter

Generic function error; the JB258 owner PDF does not decode the following character.

What it means

Generic function error; the JB258 owner PDF does not decode the following character.

This explanation is shared only by models whose manufacturer documents the same code, meaning, and guidance.

Press Cancel/Off, allow an hour to cool, then retry the oven.
If F returns, disconnect all oven power for at least thirty seconds; call service if repeated.

Manufacturer source

Select your exact model below to open its manufacturer source. Manual editions and model revisions can differ.

If there is a safety risk, stop using the appliance and follow the manufacturer’s instructions.