e18
Moderate
Bosch · Dishwashers
Water level too low - underfill condition
Quick Answer
Error code E18 on your Bosch Dishwashers means: Water level too low - underfill condition. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Verify that the water supply valve is fully open.
2
Check the water inlet hose for kinks, bends, or blockages.
3
Clean the filter screen on the water inlet valve.
4
Test household water pressure at the supply line.
5
If water pressure is adequate, test and replace the water inlet valve if needed.
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
Water inlet valve
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