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e21
Moderate
Bosch · Dishwashers
Circulation pump blocked
Quick Answer
Error code E21 on your Bosch Dishwashers means: Circulation pump blocked. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
SHXM4AY55NSHEM3AY55NSHP95CM5NSHPM65Z55NSGX78B55UCSHXM88Z75NSHXM78Z55NSHX78CM5NSHP878ZD5NSHPM88Z75NSHPM78Z55NSHEM78Z55NSHX89PW75NSHV89PW73NSHE89PW75N
Likely Causes
  1. Foreign object or debris blocking the circulation pump impeller
  2. Food particle buildup in the pump or sump area
  3. Broken glass or hard debris jammed in the pump
  4. Pump impeller damaged or seized
How to Fix It
1
Turn off the dishwasher and unplug it.
2
Remove the bottom rack and the filter assembly.
3
Check the sump area for debris, broken glass, or food particles.
4
If accessible, inspect the circulation pump impeller for blockages.
5
Remove any obstructions and clean the sump area thoroughly.
6
Reassemble and run a test cycle.
7
If the pump impeller is damaged, the circulation pump may need replacement.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Circulation pump (if impeller is damaged)
Related Error Codes
E0E01E02E03E04
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