PartsFinder UK

E44

Error code

high severity Bosch

E44 Error: If your Bosch dishwasher is displaying E44 on its control pa

If your Bosch dishwasher is displaying E44 on its control panel, you've encountered a communication fault between the appliance's internal computer systems. This error code indicates that the main control module isn't properly talking to the display control module, which is why you're seeing this message. Whilst it sounds serious, the good news is that E44 faults are often straightforward enough for a competent DIYer to investigate and resolve without calling out an engineer. The most likely culprits are the main control board, which houses the dishwasher's central processor, or the display control module that sits behind your panel. Sometimes the issue stems from loose wiring connections between these components that have simply come free during normal operation. Before assuming either module needs replacing, it's worth checking all cable connections are firmly seated. If connections look secure, one of the modules themselves has likely developed a fault and will need replacement. This guide will walk you through diagnosing exactly which component is causing the problem, potentially saving you hundreds of pounds in repair bills.

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Diagnostic Steps

  1. 1

    Step 1

    Check the wiring harness between main board and display board

  2. 2

    Step 2

    Reset the machine

  3. 3

    Step 3

    Replace the faulty board (main or display) after diagnosis

⚠️ 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
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.
2
control hard

Display Control Module

OEM: 00263474

# Display Control Module for Bosch and Siemens Dishwashers If your dishwasher's display has stopped working or the controls aren't responding properly, a faulty Display Control Module is likely the culprit. This essential component manages all the electronic controls on your machine, and when it fails, your dishwasher becomes impossible to operate reliably. The genuine OEM replacement (reference 00263474) is designed specifically for Bosch and Siemens dishwashers, ensuring perfect compatibility and performance. Rather than paying for an expensive engineer call-out, many DIY homeowners successfully replace this part themselves. Installation sits at moderate difficulty level, typically taking an hour or two with basic tools. Our top tip: before you begin, take a photo of how the wiring connects to the old module so you can replicate it exactly on the new one. This simple step prevents frustrating mistakes during reassembly. Once fitted, your dishwasher's display and control functions should return to full working order, saving you the cost of replacement. Before ordering, please verify your machine's E-Nr model number against our compatibility list to confirm this part will fit your specific dishwasher model.

Frequently Asked Questions

What does the E44 error mean on a Bosch dishwasher?↓
If your Bosch dishwasher is displaying E44 on its control panel, you've encountered a communication fault between the appliance's internal computer systems. This error code indicates that the main control module isn't properly talking to the display control module, which is why you're seeing this message. Whilst it sounds serious, the good news is that E44 faults are often straightforward enough for a competent DIYer to investigate and resolve without calling out an engineer. The most likely culprits are the main control board, which houses the dishwasher's central processor, or the display control module that sits behind your panel. Sometimes the issue stems from loose wiring connections between these components that have simply come free during normal operation. Before assuming either module needs replacing, it's worth checking all cable connections are firmly seated. If connections look secure, one of the modules themselves has likely developed a fault and will need replacement. This guide will walk you through diagnosing exactly which component is causing the problem, potentially saving you hundreds of pounds in repair bills.
Can I fix the E44 error myself?↓
Many E44 faults can be resolved by a competent DIYer. Always disconnect from mains power first. If unsure, consult a qualified engineer.

Quick Summary

Code
E44
Brand
Bosch
Parts to check
2