Thermador Dishwasher Error E15

⚡ Quick Answer: The Thermador dishwasher E15 error indicates a water leakage detection issue, triggering a safety switch to prevent flooding. This error is often acco... ✅ DIY Fixable

What Does Error E15 Mean?

The Thermador dishwasher E15 error indicates a water leakage detection issue, triggering a safety switch to prevent flooding. This error is often accompanied by a continuous beeping sound and the dishwasher halting its cycle. Water accumulation in the base of the unit is the primary cause, leading to potential damage if not addressed promptly.

Common Symptoms:

  • Dishwasher displays E15 on the control panel during or after a cycle
  • Dishwasher stops functioning and won’t continue the cycle
  • Water or moisture detected under or at the base/kickplate area
  • Dishwasher won’t reset until the base is dry and leak condition resolved

Possible Causes

  • Water leaked into the dishwasher’s base or base pan (high)
  • Clogged or blocked drain or partially backed up drain line causing water to pool (medium)
  • Malfunctioning or stuck float switch / leak sensor (medium)

How to Fix Error E15

DIY Fix Dry the base and reset the dishwasher

  1. Disconnect power to the dishwasher by unplugging or turning off the circuit breaker.
  2. Remove the lower kick plate to inspect the base area for water.
  3. Use towels, a sponge, or a wet/dry vacuum to remove any water in the base pan.
  4. Allow the base to dry completely (use a fan or wait several hours if needed).
  5. Ensure any visible leaks are addressed (hoses, seals, etc.) before restoring power.
  6. Restore power and run a short cycle to check if the E15 error clears.

DIY Fix Check for visible leaks and drain blockages

  1. Inspect door gasket and seals for damage or wear.
  2. Check the drain hose for kinks or blockages and clear if necessary.
  3. Look under the dishwasher for signs of external leaks (floor, hoses).

Technician Only Inspect internal components and repair faults

  1. Access the dishwasher base and verify the leak detection float assembly function.
  2. Test and replace the float switch or leak sensor if faulty.
  3. Check and service drain pump, hoses, and seals for integrity.
  4. Repair or replace any leaking components or cracked housings.

Parts needed: float switch / leak sensor, drain pump assembly, drain hose, door gasket / seal

🛑 When to Call a Pro:
  • If you cannot locate the source of water intrusion or leakage
  • If the E15 error persists after drying and basic checks
  • If internal components like the float switch, drain pump, or hoses show signs of failure
  • If there is significant water damage or electrical issues

Technical Specifications

wattage 1500W
component Float Switch
resistance 0-5 ohms
part_number 00715288
voltage_rating 120V AC

Common Questions

What does E15 error mean on Thermador dishwasher?

E15 indicates a leak detection issue, stopping the dishwasher to prevent flooding.

Can I fix Thermador dishwasher E15 error myself?

Yes, you can dry the base and reset the dishwasher to address the issue.

How much does it cost to fix E15 error?

Repair costs range from $100 to $350+, depending on parts and labor.

When should I call a technician for E15?

Call a technician if the error persists after troubleshooting or if there are visible damages.

Sources & References

Data last verified: 2026-03-25

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