e04
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Bosch · Dishwashers
Heating issue / flow sensor problem
Quick Answer
Error code E04 on your Bosch Dishwashers means: Heating issue / flow sensor problem. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Turn off the dishwasher and unplug it for 30 seconds, then restart.
2
Remove and clean the spray arms, checking for clogs in the spray holes.
3
Inspect the water flow sensor for debris or damage.
4
If the issue persists, contact a Bosch-certified technician for control board diagnosis.
Pro Tip
This issue typically requires professional diagnosis. Attempting this fix without proper training could cause further problems.
Parts You May Need
Water flow sensor
Main control board
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