AEG E21 Error Code — What It Means & How To Fix It

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For information purposes only. Always consult a qualified engineer before attempting repairs. 🔌 Unplug your appliance before any inspection or repair.

What does the AEG E21 error code mean?

A drainage issue similar to E20 but often related specifically to pump failure.

How to fix the Miele AEG E21 error code

Clean filter thoroughly
Check pump operation
Inspect hoses for blockages
Listen for pump noise

Frequently Asked Questions

Is E21 the same as E20?
Similar, but E21 is more likely a pump fault.

Do I need a new pump?
Only if cleaning doesn’t fix it.

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🎯 What is likely causing this fault?

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Drain Pump Failure 50%

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Blocked Filter / Hose 30%

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Pressure Switch Misread 10%

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Wiring Control 10%

⚠️ Estimates based on common faults — not a guaranteed diagnosis. Always verify before ordering parts.

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Parts you may need

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Part	Approx. UK Cost	Find it
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Drain Pump model filtered	£15 - £30	🏷️ eBay UK →

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🇬🇧 UK — Parts & Replacements