E18 Bosch washing machine E18 error
High severity
What it means
The E18 error means the drain system is blocked.
Likely causes
A clogged pump filter, a foreign object (coin, button) or a faulty pump.
Safe steps you can try
Unplug the machine, open the pump filter (usually behind the bottom front panel) and remove any foreign objects.
When to call a technician
If the error remains after cleaning the filter, the pump may need replacing.