The touch strip along the front of a black glass cooktop set into a white counter, a small key symbol lit beside the power button and every zone dark.

Thermador cooktop
showing E8204

E8204 refers to the clip-on wireless sensor some Thermador induction cooktops use to hold a pan temperature.

(844) 252-4077

Mon–Sat, 8am–8pm

  • Mode, not a failure
  • No repair needed
  • Source: Thermador

Book a visit

Three short steps, about a minute.

or call (844) 252-4077

Before you book,
in this order.

Each step comes from Thermador's own guidance for E8204 on its cooktops. Follow it to the end: the last card says whether this is a visit.

01

Replace the sensor's 3V CR2032 battery as the owner's manual shows.

02

Keep using the regular power levels until the new battery is in.

03

If E8204 persists with a fresh battery, book a visit.

Cleared?

The cooktop came right without a new part. If the same message returns while a zone or burner is on, or the top shuts itself down again mid-meal, treat it as a fresh problem and book it.

What not to do

E8204 has nothing to do with the cooktop's own power supply. The cooktop's zones keep heating normally; only the clip-on sensor is running low.

What you may
notice with it.

The cooktop problems E8204 tends to arrive with. Answer these at the cooktop before anyone is booked.

All problems

No repair indicated

Nothing to repair.

A state the cooktop was put in, or one it picked deliberately — a child lock, a demo mode that lights the keys but heats nothing, a residual-heat letter over a zone that is still warm, a prompt that no pan has been found. Nothing has broken and no part is called for.

In Thermador's own words

The battery of the wireless cooking sensor is almost drained.
Thermador induction cooktop error codes (US support) Thermador induction cooktop error codes (US support)

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Listed on Thermador's induction cooktop page for models with the wireless cooking sensor.

Thermador E8204 cooktop repair,
where we come out.

The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.

All service areas
A parent and a teenager stirring a pan together over a gas cooktop set into a kitchen island
For the heart of your home.

Questions
about E8204.

Can I clear E8204 myself?
Replace the sensor's 3V CR2032 battery as the owner's manual shows.
What battery does the Thermador cooking sensor take?
Thermador names a 3V CR2032 coin cell.
Will the cooktop still heat while E8204 shows?
Yes. Only the sensor-controlled function is affected.
Why does E8204 appear on my Thermador only when I use the cooking sensor?
E8204 refers to the coin cell in the wireless cooking sensor, so it matters only when the sensor function is in use. Regular cooking does not rely on that battery. Replacing the 3V CR2032 is the step Thermador gives.

Back to your everyday

Still showing E8204?

Book with the code copied exactly, the full model number, and whether there is any smell of gas or burning — with a code in hand, that is where the diagnosis starts.

(844) 252-4077 Schedule a repair