Wolf Cooktop Code E23: Generator 2 burner sensor open or user option data corrupted

What E23 means

On Wolf earlier-model CT induction cooktops such as the CT30IU and CT36IU, E23 means the generator 2 burner sensor is open, so the control reads no signal from it. On Wolf integrated module cooktops from the 2015 series, such as the TM15TF/S, E23 means the user option data in EEPROM memory is corrupted. The display shows E23 and the affected burners or options may not work.

Common causes of E23

Burner sensor circuit open on generator 2 of an earlier CTI cooktop
User option data stored in memory corrupted on a module cooktop
Control board or generator that needs replacing

✓ One safe check you can try

1. Turn all burners and modules off and let the cooktop cool. 2. Take pans off the glass. 3. Shut the cooktop breaker off for a minute, then close it again. 4. If E23 returns, stop using the cooktop and call; sensor circuits and stored data need technician tools.

! Why to stop there

An open sensor and corrupted memory need different tests and different parts.
The parts involved are beneath the glass next to live power.
The price is agreed in writing ahead of the repair, which then has a 30-day workmanship 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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Other Cooktop codes

E7Wolf Induction Cooktop Code E7: Keyboard Diode Configuration Error E8Wolf CT Induction Code E8: no communication with generator 1 E9Wolf CT Cooktop Code E9: Generator 2 Communication Error E12Wolf CT Cooktop Code E12: Universal OFF Key Failure E55Wolf Induction Cooktop Code E55: shorted thermistor on the heat sink E13Wolf Induction Cooktop Code E13: OFF key error, dry the controls first E6Wolf CT Cooktop Code E6: shorted ambient thermistor E19Wolf CT Induction Code E19: read line failure

E23E23 questions

What does open mean for a sensor?

An open sensor circuit is like a broken wire: the control sees no signal at all. E23 on the earlier CTI cooktops says that is happening on a generator 2 burner.

What is user option data?

It holds the preferences you can set on a module cooktop. E23 says that stored data is corrupted, so the control cannot read your options correctly.

Can a reset bring back my options?

A breaker reset may clear a one-time glitch. If the data really is corrupted, the control keeps showing E23 until a technician corrects it. Nothing is replaced until you approve the written price.