PartsFinder UK

E23

Error code

high severity Siemens

E23 Error: Your Siemens dishwasher is displaying the E23 error code, wh

Your Siemens dishwasher is displaying the E23 error code, which means the drain pump isn't working properly. This is the appliance's way of telling you that water isn't being pumped out of the machine as it should be, so your dishes won't clean effectively and water may pool at the bottom of the drum. The good news is that E23 faults are often something you can investigate yourself before calling an engineer. In most cases, the problem stems from one of two components. The drain pump itself may have failed or become blocked, preventing water from flowing away. Alternatively, the main control module (the circuit board that manages your dishwasher's functions) could be faulty and simply isn't sending the signal to operate the pump. Before you worry about expensive repairs, it's worth checking for common culprits like food debris or blockages in the pump area, as these can sometimes trigger the error. However, if the pump or control board needs replacing, parts are readily available and replacement is typically straightforward for someone with basic DIY confidence. This guide will walk you through the diagnostic steps to identify which component is causing your problem.

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Diagnostic Steps

  1. 1

    Step 1

    Check the drain pump wiring harness

  2. 2

    Step 2

    Test the drain pump motor with a multimeter

  3. 3

    Step 3

    Check for mechanical blockage in the pump impeller

  4. 4

    Step 4

    Replace the drain pump if the motor has failed

⚠️ 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
pump medium

Drain Pump

OEM: 00651628

# Drain Pump for Bosch and Siemens Dishwashers If your dishwasher is leaving standing water at the bottom or won't drain properly, a faulty drain pump is likely the culprit. Over time, this essential component can wear out or fail completely, preventing water from being expelled during the wash cycle. This genuine OEM drain pump (reference 00651628) is designed for Bosch and Siemens dishwashers and will restore your appliance's drainage function. Installation is straightforward, rated at difficulty level 2, making it an achievable DIY project for most homeowners. When fitting the new pump, remember to unplug your dishwasher and turn off the water supply first. Take a photo of the old pump's wiring connections before removal, so you can easily reconnect the replacement. Most models require you to remove the lower spray arm and filter basket to access the pump beneath the tub. Before ordering, verify your dishwasher's E-Nr model number from the appliance data plate, usually found on the side wall of the cabinet. This ensures complete compatibility with your specific machine.
2
control professional

Main Control Module (PCB)

OEM: 00648858

# Main Control Module (PCB) If your Bosch or Siemens dishwasher has stopped responding to button presses, won't cycle through programmes, or displays error codes, a faulty control module is likely the culprit. This component manages all the appliance's functions, so when it fails through age or electrical damage, your dishwasher becomes unusable. This replacement Main Control Module, reference 00648858, restores full functionality to compatible Bosch and Siemens models. It's a moderately challenging repair job, rated 4 out of 5 for difficulty, so expect to spend a couple of hours on installation if you're reasonably handy. Before you begin, take a photograph of the control panel layout and any cable connections. This simple step saves frustration when reassembling, as the module involves multiple electrical connections that must be correctly positioned. Modern control modules are precision components, so handle yours carefully throughout the installation process to avoid damage. Always verify your dishwasher's E-Nr model number matches the compatibility list before ordering. You'll find this on the appliance's data plate, usually inside the door edge. Ordering the wrong part wastes time and money, so take a moment to check first.

Frequently Asked Questions

What does the E23 error mean on a Siemens dishwasher?↓
Your Siemens dishwasher is displaying the E23 error code, which means the drain pump isn't working properly. This is the appliance's way of telling you that water isn't being pumped out of the machine as it should be, so your dishes won't clean effectively and water may pool at the bottom of the drum. The good news is that E23 faults are often something you can investigate yourself before calling an engineer. In most cases, the problem stems from one of two components. The drain pump itself may have failed or become blocked, preventing water from flowing away. Alternatively, the main control module (the circuit board that manages your dishwasher's functions) could be faulty and simply isn't sending the signal to operate the pump. Before you worry about expensive repairs, it's worth checking for common culprits like food debris or blockages in the pump area, as these can sometimes trigger the error. However, if the pump or control board needs replacing, parts are readily available and replacement is typically straightforward for someone with basic DIY confidence. This guide will walk you through the diagnostic steps to identify which component is causing your problem.
Can I fix the E23 error myself?↓
Many E23 faults can be resolved by a competent DIYer. Always disconnect from mains power first. If unsure, consult a qualified engineer.

Quick Summary

Code
E23
Brand
Siemens
Parts to check
2