Thermador Dishwasher E15 Error Code: Causes and Fixes
Quick answer: Leak protection activated
What you’ll notice
Dishwasher will not start or stops mid-cycle; base tray leak-protection float is raised.
Thermador
Dishwasher
Code E15
low severity
Thermador models: Thermador is owned by the Bosch Group and shares the Bosch dishwasher platform. The three-stage filter system is identical to Bosch. Thermador dishwashers are typically flush-installed in cabinetry — pull forward carefully on the levelling feet to access drain and inlet connections.
Common causes
- Water has entered the base tray from a leaking internal hose, pump seal, or door seal
- Spray arm hose connection leaking inside the machine
- Tub-to-pump seal deteriorated
Step-by-step fix
- Tilt the dishwasher forward 45° on old towels to drain the base tray — this resets the float and allows the machine to try to pump out.
- Run a short drain cycle.
- After draining, inspect under and inside for the leak source before running a full wash.
- Common locations: door seal, circulation pump seal, and the hose from the pump to the spray arm.
Tools you may need
TowelsFlashlightScrewdriver set
Prevention
- Inspect the door seal annually for cracks.
- Check under the dishwasher periodically for drip marks.
When to stop DIY
If the tray fills again on the next cycle, the leak source must be found and repaired before further use.
FAQ
What does E15 mean on Thermador dishwasher?
E15 usually indicates: Leak protection activated.
Can I keep using the appliance with E15?
Use caution. Severity is low. If the tray fills again on the next cycle, the leak source must be found and repaired before further use.
How long does this fix usually take?
Typical first-pass troubleshooting takes 15–30 minutes (drain and inspect).