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F43

Error code

medium severity Bosch

F43 Error: Your Bosch dishwasher is displaying the F43 error code, whic

Your Bosch dishwasher is displaying the F43 error code, which means the door isn't locking properly when you try to run a cycle. This is a medium-severity fault that prevents the appliance from operating safely, since the machine needs a secure seal to function correctly. The good news is that many F43 faults are straightforward to diagnose and fix yourself without calling out an engineer. The most common culprits are the door latch mechanism, which may be worn or misaligned, and the door catch or strike plate, which could be bent or obstructed by debris. Sometimes the electronic door lock itself fails, though this is less common. You should also check that nothing is preventing the door from closing fully, such as a dish rack that's been loaded too high or a foreign object wedged in the frame. Start by inspecting the door's exterior and interior thoroughly. Clean away any food particles or limescale around the latch area, as buildup can prevent proper engagement. If the latch appears damaged or the door still won't lock after cleaning, you may need replacement parts. This guide will walk you through the diagnosis process step by step.

Diagnostic Steps

  1. 1

    Step 1

    Check door seal is not obstructing closure

  2. 2

    Step 2

    Inspect door latch mechanism for damage

  3. 3

    Step 3

    Check door lock wiring connections

  4. 4

    Step 4

    Replace door interlock if faulty

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

Frequently Asked Questions

What does the F43 error mean on a Bosch dishwasher?↓
Your Bosch dishwasher is displaying the F43 error code, which means the door isn't locking properly when you try to run a cycle. This is a medium-severity fault that prevents the appliance from operating safely, since the machine needs a secure seal to function correctly. The good news is that many F43 faults are straightforward to diagnose and fix yourself without calling out an engineer. The most common culprits are the door latch mechanism, which may be worn or misaligned, and the door catch or strike plate, which could be bent or obstructed by debris. Sometimes the electronic door lock itself fails, though this is less common. You should also check that nothing is preventing the door from closing fully, such as a dish rack that's been loaded too high or a foreign object wedged in the frame. Start by inspecting the door's exterior and interior thoroughly. Clean away any food particles or limescale around the latch area, as buildup can prevent proper engagement. If the latch appears damaged or the door still won't lock after cleaning, you may need replacement parts. This guide will walk you through the diagnosis process step by step.
Can I fix the F43 error myself?↓
Many F43 faults can be resolved by a competent DIYer. Always disconnect from mains power first. If unsure, consult a qualified engineer.

Quick Summary

Code
F43
Brand
Bosch
Parts to check
0