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Error Code

Thermador Dishwasher E15

E15 indicates the anti-flood system has detected water in the base of the dishwasher.

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Reviewed by Marcus Cole · Last reviewed August 7, 2026

Error guide

Code overview

Marcus Cole Written by Marcus Cole Appliance Repair Content Specialist Published August 1, 2026 Updated August 12, 2026 Technically reviewed August 7, 2026
Error code E15
Appliance Dishwasher
Dishwasher service reference
Quick answer

E15 indicates the anti-flood system has detected water in the base of the dishwasher.

Model compatibility: Thermador reuses codes across series and model years, so E15 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.

Plain language

What this code means

The E15 code means the dishwasher’s anti-flood float has triggered because water collected in the base tray. It is a protective response that stops the cycle to prevent a leak from spreading.

Signs

Symptoms you may notice

Cycle stops and E15 appears

Base tray float has activated

Dishwasher will not resume normally

Why it happens

Possible causes

A minor leak collecting in the base tray

A blocked or restricted drain path

Residual water from a previous fault

Before you call

Safe checks you can make

These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.

Check for visible water pooling under the unit

Confirm the dishwasher is level and the door closes fully

Look for obvious kinks in an accessible drain hose

Important safety warning. E15 is a water-safety response. Because it involves water near electrical components, avoid internal disassembly and have a technician locate the source of the water.

Please avoid

What not to attempt

  • Do not tip or disassemble the dishwasher to drain it
  • Do not remove internal electrical components
  • Do not bypass the anti-flood safety device
Get help

When to call a technician

If E15 returns after basic checks, or if you see any water under the unit, book a diagnosis so the leak source can be found and corrected safely.

FAQ

Frequently asked questions

References

Sources & references

  • Appliance user manual — error indicators section
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