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Quick answer
A Thermador dishwasher error display must be matched to the exact code and model before you choose a remedy. The official Thermador error-code list includes separate water-flow, heater, heat-pump, drain, voltage, and leak-protection conditions; an unlisted or repeated code belongs with service.
Work through in order
Diagnostic checks
Use only checks that match the exact appliance or system and its official guide.
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Check 1
Record the exact display, model number, and when the code appears.
Expected result: The code is complete and tied to a model, or it is only a partial symbol or an unlisted code.
Next step: Use the exact code and model in the Thermador manual or support lookup; do not substitute a code from another dishwasher.
Why this matters
Why: Thermador code meanings and reset steps vary by code and model; an unlisted code cannot safely be assigned to a part.
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Check 2
For an inlet or water-flow code such as E14, E16, E17, E18, E3000, E3200, E3300, or E3400, inspect only the accessible inlet hose for kinks and confirm the household water supply is on.
Expected result: The hose is kinked or damaged, the supply is closed, or the machine has normal water entry.
Next step: Correct an accessible kink or reopen the supply if safe, then retry once; arrange service if the code returns.
Why this matters
Why: A water-entry restriction is more likely than a heater diagnosis when the code is in the water-flow group.
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Check 3
If the display is E15 or E3100, look for water in the base only from outside the appliance and turn off the water inflow.
Expected result: The leak-protection condition is present or there is visible water near the base.
Next step: Stop using the dishwasher and arrange service; do not remove panels to search for the leak.
Why this matters
Why: Thermador identifies these codes as water in the base and an activated leakage-protection system.
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Check 4
If the display is E04, E0105, E6001, or another heater or heat-pump fault, do not test live wiring or replace a heater based on the code alone.
Expected result: The code repeats after the model-approved reset, or the dishwasher will not complete the cycle.
Next step: Stop repeated resets and provide the code, model, and cycle behavior to qualified service.
Why this matters
Why: The official list routes these heater or heat-pump faults to Thermador support when they persist.
Use your observations
Decision map
Find the observation that best matches what you see, then follow the next safe action.
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PATH 01Next step
What you see
The code is listed and clears after the official code-specific user check, with no leak or electrical warning.
Do this next
Run one normal cycle while monitoring the same code.
Why this path and its safety boundary
Why it matters: The condition was likely a correctable water-flow, filter, or transient control state for that model.
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PATH 02Next step
What you see
The code returns, is not listed, or the dishwasher cannot complete a cycle.
Do this next
Stop troubleshooting and arrange Thermador service with a photo of the display.
Why this path and its safety boundary
Why it matters: A persistent internal, heating, control, voltage, or water-system fault is more likely than a one-time user condition.
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PATH 03Next step
What you see
Water is detected at the base, the breaker trips, or there is smoke, sparking, or a burning odor.
Do this next
Turn off water for a leak condition, isolate power only if safely accessible, and obtain qualified service.
Why this path and its safety boundary
Why it matters: The issue has crossed the user-safe boundary.
Helpful context
Understand the symptom
What to check first
A Thermador dishwasher error display must be matched to the exact code and model before you choose a remedy. The official Thermador error-code list includes separate water-flow, heater, heat-pump, drain, voltage, and leak-protection conditions; an unlisted or repeated code belongs with service. Record the exact model and symptom pattern before ordering a part. A user check should change the next decision; it should not be used to infer an unverified component.
When checks do not resolve it
Need a professional?
Use qualified Thermador service when a code repeats, is unlisted, points to heater, heat pump, voltage, control, drain, or leak protection, or prevents the cycle from completing.
Common questions
FAQ
Can I interpret a Thermador code from a different model?
No. Use the exact model manual and the official code entry. Similar-looking codes can refer to different systems.
What should I give the technician?
Give the complete code, model and serial information, selected cycle, when the code appears, and any water or electrical observations.
Read the exact guide
Official sources
- Dishwashers - TroubleshootingThermador · Dishwashers - Troubleshooting is official manufacturer material; model-specific details remain limited to the named product or manual.
- Dishwashers - Error CodesThermador · Dishwashers - Error Codes is official manufacturer material; model-specific details remain limited to the named product or manual.
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