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Bosch · Dishwashers
Circulation pump motor electrical fault
Quick Answer
Error code E20 on your Bosch Dishwashers means: Circulation pump motor electrical fault. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
SHXM4AY55NSHEM3AY55NSHP95CM5NSHPM65Z55NSGX78B55UCSHXM88Z75NSHXM78Z55NSHX78CM5NSHP878ZD5NSHPM88Z75NSHPM78Z55NSHEM78Z55NSHX89PW75NSHV89PW73NSHE89PW75N
Likely Causes
  1. Electrical short or break in the circulation pump motor windings
  2. Incorrect resistance in the pump motor winding
  3. Internal heater fault in the heat pump
  4. Wiring issue to the circulation pump motor
How to Fix It
1
Turn off the dishwasher and unplug it.
2
Use a multimeter to test the circulation pump motor windings for proper resistance.
3
Inspect wiring connections to the circulation pump for damage or corrosion.
4
If the motor windings show incorrect resistance, the circulation pump needs replacement.
5
A Bosch-certified technician is recommended for this repair.
Pro Tip
This issue typically requires professional diagnosis. Attempting this fix without proper training could cause further problems.
Parts You May Need
Circulation pump motor
Wiring harness
Related Error Codes
E0E01E02E03E04
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