PartsFinder UK

E31

Error code

low severity Siemens

E31 Error: Your Siemens dishwasher is displaying an E31 error code on i

Your Siemens dishwasher is displaying an E31 error code on its control panel, and whilst this can feel alarming, it's actually one of the more straightforward faults to resolve. This error indicates that the turbidity sensor—the component responsible for detecting how clean your rinse water is—has developed a fault or is malfunctioning. Think of it as your dishwasher's quality control check; when this sensor isn't working properly, the machine can't accurately assess water clarity and may struggle to complete its cycle as intended. The good news is that E31 faults are generally classified as low severity, and many UK homeowners successfully fix them without calling out an engineer. In most cases, the turbidity sensor itself is the culprit and may simply need cleaning or replacing. The sensor can accumulate limescale, detergent residue, or mineral deposits over time, particularly in hard water areas, which prevents it from functioning correctly. Before investigating further, we'll walk you through the diagnostic steps and show you exactly what to check. With basic tools and a little patience, you may well be able to get your dishwasher running smoothly again.

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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 Siemens dishwasher?↓
Your Siemens dishwasher is displaying an E31 error code on its control panel, and whilst this can feel alarming, it's actually one of the more straightforward faults to resolve. This error indicates that the turbidity sensor—the component responsible for detecting how clean your rinse water is—has developed a fault or is malfunctioning. Think of it as your dishwasher's quality control check; when this sensor isn't working properly, the machine can't accurately assess water clarity and may struggle to complete its cycle as intended. The good news is that E31 faults are generally classified as low severity, and many UK homeowners successfully fix them without calling out an engineer. In most cases, the turbidity sensor itself is the culprit and may simply need cleaning or replacing. The sensor can accumulate limescale, detergent residue, or mineral deposits over time, particularly in hard water areas, which prevents it from functioning correctly. Before investigating further, we'll walk you through the diagnostic steps and show you exactly what to check. With basic tools and a little patience, you may well be able to get your dishwasher running smoothly again.
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
Siemens
Parts to check
1