Use HE detergent and reduce excessive dosing.
Bosch · Washer
Bosch Washer E:18 Error Code
The documented meaning, with the context that matters for your appliance.
What does the Bosch Washer E:18 code mean?
E:18
DOCUMENTED MEANING
Drainage problem
Source scope: wat28400uc. Check the cited documentation for your model.
View manufacturer sourcesLikely causes
- Drain-pump obstructionDocumented
- Excess or unsuitable detergentDocumented
What you can check
Pump maintenance requires the manual isolation and cooling procedure.
Models and series
Source scope: wat28400uc. Check the cited documentation for your model.
- Model
- WAT28400UC
Series identifiers are shown as recorded in the source. They are not a complete list of compatible models.
Use the instructions for your exact appliance model. A similar display on another model can have a different meaning or procedure.
Sources
Manufacturer documentation supporting this entry. FaultDecoded is independent of these manufacturers.
- Bosch Washer Error Codes
Bosch · Source consulted 2026-09-21
- WAT28400UC Use and Care / Installation Instructions
Bosch · Source consulted 2026-09-21