PartsFinder UK

E23

Error code

high severity Bosch

E23 Error: Your Bosch dishwasher is displaying the E23 error code, whic

Your Bosch dishwasher is displaying the E23 error code, which means the drain pump isn't working properly. You've likely noticed that water isn't draining from the machine at the end of the cycle, or the appliance has stopped mid-wash because it's detected a drainage problem. This is classified as a high-priority fault, but don't worry—many E23 errors can be resolved without calling out an engineer. The drain pump is responsible for pushing water out of your dishwasher at the end of each cycle. When it fails to operate, the machine stops to prevent flooding and displays this code. The fault usually points to one of two components: either the drain pump itself has become blocked or faulty, or the main control module (the circuit board that tells the pump when to work) has developed an issue. The good news is that the drain pump is often accessible and can sometimes be cleared of blockages by a competent home-owner. Even if replacement is needed, it's typically one of the more straightforward repairs. We'll walk you through the diagnosis process below to help identify the exact cause and your options for fixing it.

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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 Bosch dishwasher?↓
Your Bosch dishwasher is displaying the E23 error code, which means the drain pump isn't working properly. You've likely noticed that water isn't draining from the machine at the end of the cycle, or the appliance has stopped mid-wash because it's detected a drainage problem. This is classified as a high-priority fault, but don't worry—many E23 errors can be resolved without calling out an engineer. The drain pump is responsible for pushing water out of your dishwasher at the end of each cycle. When it fails to operate, the machine stops to prevent flooding and displays this code. The fault usually points to one of two components: either the drain pump itself has become blocked or faulty, or the main control module (the circuit board that tells the pump when to work) has developed an issue. The good news is that the drain pump is often accessible and can sometimes be cleared of blockages by a competent home-owner. Even if replacement is needed, it's typically one of the more straightforward repairs. We'll walk you through the diagnosis process below to help identify the exact cause and your options for fixing it.
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
Bosch
Parts to check
2