PartsFinder UK

E31

Error code

low severity Bosch

E31 Error: Your Bosch dishwasher is showing an E31 error code on its di

Your Bosch dishwasher is showing an E31 error code on its display, which means the turbidity sensor—a water clarity sensor inside your machine—has detected a fault or stopped working properly. This sensor monitors how clean your rinse water is and helps your dishwasher determine when the wash cycle is complete. When it malfunctions, your appliance can't accurately assess water quality, triggering the error message. The good news is that E31 faults are generally considered low severity and are often straightforward to resolve without calling out an engineer. In many cases, the turbidity sensor itself simply needs cleaning or replacing, which can be a manageable DIY task if you're reasonably handy. The sensor is typically located near the wash pump or sump area, where mineral deposits or debris can accumulate over time and cause it to malfunction. Before you decide whether to tackle this yourself or contact a professional, we'll walk you through the most likely culprits, how to access the sensor safely, and whether it's worth attempting a repair. Understanding exactly what's gone wrong will help you make the right decision for your situation.

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Diagnostic Steps

  1. 1

    Step 1

    Clean the turbidity sensor (located in the sump area)

  2. 2

    Step 2

    Check sensor wiring connections

  3. 3

    Step 3

    Replace the sensor if cleaning does not resolve the issue

⚠️ Always disconnect your appliance from mains power before starting any repair. If in doubt, consult a qualified engineer.

Parts to Check in order of probability

1
sensor medium

Turbidity Sensor

OEM: 00611573

# Bosch/Siemens Turbidity Sensor (00611573) Is your dishwasher failing to clean properly or displaying error codes? A faulty turbidity sensor could be the culprit. This component monitors water clarity during the wash cycle, allowing your machine to determine when dishes are clean and adjust the wash programme accordingly. When it wears out, your dishwasher loses this vital feedback mechanism, resulting in poor cleaning performance or unexpected cycle interruptions. Replacing the turbidity sensor is a straightforward job for most DIY homeowners, rated at difficulty level 2. The OEM reference 00611573 is compatible with a wide range of Bosch and Siemens dishwashers, making it a common repair solution. Before disconnecting any cables, take a quick photograph of the wire connections so you know exactly how to reconnect them during installation. This simple step saves frustration and potential mistakes. The sensor typically sits behind the filter basket area, so you'll need to remove that first to access it. Once you've disconnected the old unit and unplugged its connector, the new sensor slides into place easily. Always verify your dishwasher's E-Nr model number before ordering to ensure complete compatibility with your specific appliance.

Frequently Asked Questions

What does the E31 error mean on a Bosch dishwasher?↓
Your Bosch dishwasher is showing an E31 error code on its display, which means the turbidity sensor—a water clarity sensor inside your machine—has detected a fault or stopped working properly. This sensor monitors how clean your rinse water is and helps your dishwasher determine when the wash cycle is complete. When it malfunctions, your appliance can't accurately assess water quality, triggering the error message. The good news is that E31 faults are generally considered low severity and are often straightforward to resolve without calling out an engineer. In many cases, the turbidity sensor itself simply needs cleaning or replacing, which can be a manageable DIY task if you're reasonably handy. The sensor is typically located near the wash pump or sump area, where mineral deposits or debris can accumulate over time and cause it to malfunction. Before you decide whether to tackle this yourself or contact a professional, we'll walk you through the most likely culprits, how to access the sensor safely, and whether it's worth attempting a repair. Understanding exactly what's gone wrong will help you make the right decision for your situation.
Can I fix the E31 error myself?↓
Many E31 faults can be resolved by a competent DIYer. Always disconnect from mains power first. If unsure, consult a qualified engineer.

Quick Summary

Code
E31
Brand
Bosch
Parts to check
1