What are the symptoms of error code E00 / -18?

Washer stops mid‑cycle with E00 or -18 displayed, Water remains in the drum after draining, Loud humming from the drain pump, Washer takes unusually long to drain

What causes error code E00 / -18?

Clogged drain pump filter, Foreign objects blocking the pump impeller, Kinked or obstructed drain hose, Weak or failing drain pump motor, Restricted household standpipe or sink drain

How do I fix error code E00 / -18?

Open and clean the drain pump filter thoroughly., Remove coins, lint, buttons, or debris from the impeller area., Inspect the drain hose for kinks or clogs., Run a drain cycle to confirm proper water flow., If the pump hums but does not spin, inspect the impeller and motor.

Bosch Washer - E00 / -18 Error Code

The drain pump is blocked or unable to rotate.

Meaning

The drain pump is blocked or unable to rotate.

The Bosch E00 (or -18) error code indicates that the washing machine has detected a drain pump blockage or an inability for the pump impeller to rotate freely. Bosch washers monitor pump RPM and drain time; when the pump cannot evacuate water at the expected rate, the control module triggers E00 to prevent overheating, water retention, and cycle failure. This error is most commonly caused by debris in the pump filter, foreign objects lodged in the impeller, or a kinked drain hose restricting flow. In rare cases, a failing pump motor or damaged wiring harness can also trigger E00.

Symptoms

Washer stops mid‑cycle with E00 or -18 displayed
Water remains in the drum after draining
Loud humming from the drain pump
Washer takes unusually long to drain

Causes

Clogged drain pump filter
Foreign objects blocking the pump impeller
Kinked or obstructed drain hose
Weak or failing drain pump motor
Restricted household standpipe or sink drain

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Step-by-Step Fixes

Open and clean the drain pump filter thoroughly.
Remove coins, lint, buttons, or debris from the impeller area.
Inspect the drain hose for kinks or clogs.
Run a drain cycle to confirm proper water flow.
If the pump hums but does not spin, inspect the impeller and motor.

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Safety Notes

Always disconnect power before accessing the pump filter.
Keep a towel or shallow tray ready—water will drain when the filter is opened.

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Applicable Models

Show Models

WAT28400UC
WAT28401UC
WAXH20
WGB86200UC

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Bosch Washer E18 – The washer is draining too slowly or not at all.

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Other Bosch Washer Error Codes

Show All Error Codes

Model-Specific Notes

On the WAT28400UC platform, Bosch recommends cleaning the drain pump filter every 2–3 months to prevent recurring E00 errors.

Disclaimer

The information provided on this page is for educational and informational purposes only. Repairs involve electrical, mechanical, and water-related risks. Always follow manufacturer instructions and consider contacting a qualified technician for diagnosis or repair.