e31
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Bosch · Dishwashers
Zeolite drying unit problem / safety switch activated
Quick Answer
Error code E31 on your Bosch Dishwashers means: Zeolite drying unit problem / safety switch activated. 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.
2
On 800 Series models with CrystalDry, this may indicate the Zeolite unit has gotten wet.
3
Check the base pan for water (similar to E15 procedure).
4
If water is present, identify and fix the source of the leak.
5
The Zeolite heater and Zeolite container may need to be exchanged.
6
Contact a Bosch-certified technician for Zeolite unit replacement.
Pro Tip
This issue typically requires professional diagnosis. Attempting this fix without proper training could cause further problems.
Parts You May Need
Zeolite heater
Zeolite container
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