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Full Error Code List

Thermador oven error codes

Use this page when you already know the display code or want to compare Thermador oven meanings quickly by severity.

How to use this list

Use the table to confirm the exact code, then open the detail guide for the safest first checks, model notes, and next-step options.

What the list is best for

  • Matching the exact display code before you act.
  • Comparing severity and meaning side by side.
  • Spotting closely related warnings that users often confuse.

What happens on the detail page

  • Quick answer and severity guidance.
  • Symptom-based first checks where the content supports it.
  • Model and display notes plus trust and source context.

Thermador oven code table

Scan by code, meaning, and severity, then open the exact detail page when you need step-by-step guidance.

All indicators flashing
All display indicators on the cooktop are flashing simultaneously, signaling a general system fault. This typically indicates an internal error that the cooktop's self-diagnostic system has detected but cannot pinpoint to a single component.
medium severity
Child Lock
The cooktop child safety lock is engaged. All zone and power controls are disabled to prevent accidental operation. This is not an error — it is an intentional safety feature.
low severity
dE
The cooktop display shows 'dE' when the unit is in demonstration mode (display mode without heating) or when the child safety lock is engaged, depending on the model.
low severity
E005
The oven door lock mechanism has failed to engage or disengage correctly, typically during or after a self-cleaning cycle.
medium severity
E011
The oven's temperature sensor (NTC probe) has an open-circuit fault or has failed, preventing the range from accurately measuring oven cavity temperature.
high severity
E11
The oven's NTC (negative temperature coefficient) temperature sensor has failed or has an open-circuit fault, preventing the oven from measuring cavity temperature.
high severity
E100
The oven cavity temperature exceeded the safe maximum limit and the safety shutoff has stopped the heating elements to prevent damage or fire.
medium severity
E101
The oven's cooling fan has stopped working or is running below the required speed, preventing proper cooling of the control electronics and oven exterior.
high severity
E126
The oven's main control board has detected a communication failure between internal electronic modules, preventing normal operation.
high severity
E302
The power board (lower-case e302 on some models) or the control panel (upper-case E302 on others) has exceeded its safe operating temperature. Both conditions trigger the same display code on different model variants.
medium severity
E310
The oven's relay board — which controls power to the heating elements — has reported a fault, preventing the heating elements from operating correctly.
high severity
ERR / toP
The range has detected an oven temperature error (ERR) or an overtemperature condition (toP — the oven is too hot). Both conditions trigger a safety shutoff.
medium severity
F2
A cooktop zone has detected an overtemperature condition — the cooking surface or cookware temperature has exceeded the safety limit and the zone has switched off.
low severity
F4
The cooktop's temperature sensor for one or more zones has an open-circuit fault — the sensor wire has broken or the sensor itself has failed, and the zone cannot measure surface temperature.
high severity
F5
F5 covers two distinct conditions: (1) a temperature sensor has a short-circuit fault — the sensor is reading incorrectly, or (2) a cooking zone has automatically switched off after approximately 2 hours of continuous use as a safety measure.
medium severity
F8
The cooktop has reduced power to one or more zones because the combined power draw of all active zones has exceeded the cooktop's total power limit. This is a managed power-sharing condition, not a fault.
low severity
U400
The cooktop has detected that the household supply voltage is below the minimum required for safe operation. The cooktop will not heat until adequate voltage is restored.
medium severity

Common symptom shortcuts

These clusters give users another way into the list when they know the symptom but not the code.

Door, latch, and lock warnings

  • E005 - The oven door lock mechanism has failed to engage or disengage correctly, typically during or after a self-cleaning cycle.

Sensor and temperature faults

  • E011 - The oven's temperature sensor (NTC probe) has an open-circuit fault or has failed, preventing the range from accurately measuring oven cavity temperature.
  • E11 - The oven's NTC (negative temperature coefficient) temperature sensor has failed or has an open-circuit fault, preventing the oven from measuring cavity temperature.
  • E100 - The oven cavity temperature exceeded the safe maximum limit and the safety shutoff has stopped the heating elements to prevent damage or fire.

Control board and electronics warnings

  • All indicators flashing - All display indicators on the cooktop are flashing simultaneously, signaling a general system fault. This typically indicates an internal error that the cooktop's self-diagnostic system has detected but cannot pinpoint to a single component.
  • Child Lock - The cooktop child safety lock is engaged. All zone and power controls are disabled to prevent accidental operation. This is not an error — it is an intentional safety feature.
  • E005 - The oven door lock mechanism has failed to engage or disengage correctly, typically during or after a self-cleaning cycle.

Common guides to open next

All indicators flashing fix guide

All indicators flashing - All display indicators on the cooktop are flashing simultaneously, signaling a general system fault. This typically indicates an internal error that the cooktop's self-diagnostic system has detected but cannot pinpoint to a single component.

Child Lock fix guide

Child Lock - The cooktop child safety lock is engaged. All zone and power controls are disabled to prevent accidental operation. This is not an error — it is an intentional safety feature.

dE fix guide

dE - The cooktop display shows 'dE' when the unit is in demonstration mode (display mode without heating) or when the child safety lock is engaged, depending on the model.

E005 fix guide

E005 - The oven door lock mechanism has failed to engage or disengage correctly, typically during or after a self-cleaning cycle.