---
title: "Thermador oven error code E104"
description: "Thermador oven error code E104: thermador error code E104: the cavity temperature sensor reads as a short circuit — E104 for the upper cavity, E204 for the…"
url: "https://thermadormiami.support/error-codes/error-code-e104-oven/"
date_modified: "2026-08-18"
Appliance type: "Wall ovens & steam ovens"
---


# Thermador oven error code E104

Error code

# Thermador oven error code E104

Thermador error code E104: the cavity temperature sensor reads as a short circuit — E104 for the upper cavity, E204 for the lower one. What the code covers, what to check first, and what it does not tell you — on wall ovens & steam ovens.

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## Book a diagnostic visit

Your model number and a line about what it is doing is enough to get started.

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What we can confirm

## Code E104, from the manufacturer’s own documentation

A code is only meaningful together with the generation showing it — the same two digits mean different things across generations.

The code

E104

The cavity temperature sensor reads as a short circuit — E104 for the upper cavity, E204 for the lower one

or call [(305) 846-7685](tel:+13058467685)

What it narrows down to

Cavity sensor shorted

What you are probably seeing

[Oven runs hot or cold](https://thermadormiami.support/symptoms/oven-temperature-wrong/)

Diagnostic

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What it looks like from the kitchen

## The symptom this code usually arrives with

A code names the subsystem; the symptom is what sent you to look at the display in the first place. That page says what it usually turns out to be, cheapest cause first.

- Oven runs hot or cold
					Baking that has gone wrong at the same setting you have always used. A thermometer in the middle of the oven settles in twenty minutes what an argument about it never will.

														Everything browning too fast, or not at all

														A consistent offset at every setting

														A code in the E1 or E2 hundreds

								[

				What it usually means

			](https://thermadormiami.support/symptoms/oven-temperature-wrong/)
Baking that has gone wrong at the same setting you have always used. A thermometer in the middle of the oven settles in twenty minutes what an argument about it never will.

- Everything browning too fast, or not at all
- A consistent offset at every setting
- A code in the E1 or E2 hundreds
In more detail

## About Thermador oven error code E104

### What this one means

The cavity temperature sensor reads as a short circuit — E104 for the upper cavity, E204 for the lower one. It is a code the manufacturer publishes for this appliance, not one we have worked out — and it is decoded here rather than left as three characters on a display.

### The other ways your machine may say it

The two labels are the two cavities of a double or triple oven, not two ages of machine — E1xx is the upper cavity and E2xx the lower, and the number tells you which one to look at:

- **E104, E204**
- **Three LEDs on the panel blinking out the digits 1, 0 and 4** — how a model with no digital display says it. On that machine, the lights are the code

### What the code covers

A published cause names a circuit rather than a component, which is the single most useful thing to know before ordering a part. This one covers:

- The cavity temperature sensor
- A chafed harness shorting against the cabinet
- The plug at the control module

### Worth doing before you call

- Note whether the oven ran hot before it stopped — a shorted sensor reads cold to the control, which then keeps heating

### Then what

This is the twin of the open-circuit code and is tested the same way, from the plug at the control module back to the sensor.

This code is published for wall ovens & steam ovens. The [full list of codes](https://thermadormiami.support/error-codes/) has the rest of them, searchable, including the labels older and newer machines use for the same conditions.

This article is based on:

- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards

## Tell us the model number and what it is doing.

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**[Read full article: Thermador oven error code E104](https://thermadormiami.support/error-codes/error-code-e104-oven/)**