Bosch Washer E18 / F18: Drainage Is Restricted

Documentation checkedBy ErrHiveUpdated October 28, 2026

THE SHORT ANSWER

The drain route needs checking.

E18/F18 indicates restricted drainage. Follow your model manual before opening the pump.

First safe check

Inspect the visible drain-hose run without disconnecting a full washer.

Applies to

Bosch US washer support; the exact model manual takes precedence. No exact-model applicability is asserted.

Before you start

Switch off and unplug before maintenance; allow hot water to cool and prepare to contain residual water.

Go to safe checks

WHAT YOU MAY NOTICE

Symptoms to record

Display: E18 / F18.

WORK THROUGH THE BASICS

Safe troubleshooting checks

0 of 2 checked

Use the checkboxes to keep track as you read. Stop at any warning or step that does not match your appliance.

Check the route
Look for a pinched drain hose.
What to note
An external restriction may be identifiable.
Use the manual
Follow the exact drain/pump-care procedure or request help.
What to note
Residual water is handled in the intended way.

THE DETAILS MATTER

Scope & troubleshooting notes

Owner observations

Contain residual water and let it cool before pump access.

YOUR NEXT DECISION

When to stop and get help

Contact support if the fault persists.

Record what you see

Keep the full model number, exact displayed code, and your observations together for the next conversation.

Use the right support

Contact the manufacturer or a qualified appliance technician when the guide calls for service.

Bosch support

THE EVIDENCE

Sources & verification

Our explanations are editorial summaries of the documentation below. They do not replace the instructions for your exact appliance.

Bosch Washer Error Codes
Bosch Home Appliances · Manufacturer support · Checked Oct 28, 2026
Meaning and owner guidance — Bosch US washer support; the exact model manual takes precedence. No exact-model applicability is asserted.

ErrHive is an independent information resource, not an authorized representative of Bosch. Follow your appliance’s manual. Hazardous repairs belong with qualified professionals. Read our safety policy.