e04
Moderate
Bosch · Washing Machines
Door lock relay failure or drainage problem
Quick Answer
Error code E04 on your Bosch Washing Machines means: Door lock relay failure or drainage problem. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Unplug the washing machine for 3 minutes to reset the control module.
2
If the code returns, the control module may need replacement.
3
For drain-related E04: remove the front lower panel and inspect the drain pump for debris.
4
Reduce detergent usage if excessive suds are detected.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Control module
Drain pump
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