Bosch dishwasher E2120 points to zeolite / crystaldry chamber heater fault. Start with the safe checks that apply to this system and stop if the warning returns.
Bosch dishwasher E2120 points to zeolite / crystaldry chamber heater fault. Start with the safe checks that apply to this system and stop if the warning returns.
Model compatibility: Bosch reuses codes across series and model years, so E2120 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Why it happens
Possible causes
CrystalDry chamber heating fault
wiring or control fault for the Zeolite heating path
model-specific temperature/heater fault
Important safety warning. Stop use if you notice overheating, burning odor, smoke, or electrical damage.
Seeing this code on your Bosch appliance?
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