---
title: "Thermador oven error code E123"
description: "Thermador oven error code E123: thermador error code E123: the probe is reporting a temperature below the range it is allowed to report."
url: "https://thermadormiami.support/error-codes/error-code-e123-oven/"
date_modified: "2026-08-18"
Appliance type: "Wall ovens & steam ovens"
---


# Thermador oven error code E123

Error code

# Thermador oven error code E123

Thermador error code E123: the probe is reporting a temperature below the range it is allowed to report. 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 E123, 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

E123

The probe is reporting a temperature below the range it is allowed to report

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

What it narrows down to

Probe reads too cold

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 E123

### What this one means

The probe is reporting a temperature below the range it is allowed to report. 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 same condition is published under more than one label, because it has been carried across generations of this appliance:

- **Three LEDs on the panel blinking out the digits 1, 2 and 3** — 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 probe
- The socket in the cavity wall
- The probe module

### What to try yourself

- Unplug and replug the probe with the oven cold, seating it fully
- Try a second probe if you have one

### Then what

The twin of the too-hot probe code, and it has the same cheap first move: rule out the probe before anyone opens the oven.

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 E123](https://thermadormiami.support/error-codes/error-code-e123-oven/)**