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Error code reference

Thermador Range Error Code E:06

WFMC washer

Thermador codesThermador range codes

WFMC washer: NTC shorted (faulty NTC or bad wire harness).

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What E:06 means on a Thermador range

The E:06 error code on a Thermador range displaying WFMC washer behavior indicates a shorted NTC (Negative Temperature Coefficient) thermistor. An NTC thermistor is a temperature-sensing resistor whose resistance decreases as temperature increases. When the control detects a shorted condition, it means the thermistor circuit is reading an abnormally low resistance value, which the control interprets as an impossibly high temperature reading. This causes the system to fault out and display E:06 to prevent potential damage from what it perceives as a runaway temperature condition.

The two primary causes of this fault are a failed NTC thermistor itself or a compromised wire harness connecting the thermistor to the control board. A shorted thermistor typically occurs when the internal resistance element fails and the component reads near zero ohms across its terminals. A damaged wire harness can produce the same symptom if insulation has worn away, allowing two conductors to contact each other and creating a short circuit in the sensor loop. Pinched wiring, heat damage, or rodent damage to the harness are common contributors.

Diagnosing this fault requires isolating whether the thermistor or the wiring is responsible. Disconnecting the NTC thermistor from the harness and measuring its resistance with a multimeter will reveal if the component itself has failed. A shorted thermistor will read very low resistance or near zero ohms regardless of temperature. If the thermistor tests within normal range, the harness should be inspected for pinched sections, bare wires, or points of contact between conductors that would create the short.

Source: manufacturer service documentation.

Common causes of E:06

  1. 01

    Failed NTC thermistor

    Part replacement

    The thermistor itself has shorted internally, causing it to read near zero ohms. This is the most common cause and is confirmed by measuring the component's resistance with a multimeter and finding an abnormally low or zero reading.

  2. 02

    Damaged wire harness

    Part replacement

    The wiring between the NTC thermistor and the control board has been pinched, abraded, or heat-damaged, causing two conductors to contact each other and create a short. Visually inspect the harness for worn insulation or pinch points.

  3. 03

    Loose or corroded connector

    Wiring / connection

    Connectors at either end of the thermistor harness can corrode or seat improperly, creating unintended electrical contact within the connector body. Disconnecting and inspecting the connector terminals for corrosion or bent pins can identify this issue.

  4. 04

    Moisture intrusion at the thermistor or connector

    Wiring / connection

    Water or condensation inside the thermistor connector can bridge the terminals and mimic a short circuit condition. Drying the connector thoroughly and re-testing may resolve the fault if moisture is the cause.

See the test procedure for each cause

Frequently asked questions about E:06

What does E:06 mean on a Thermador range?
The E:06 code indicates that the NTC thermistor, which is the temperature sensor in the appliance, has been detected as shorted by the control board. A shorted thermistor means the circuit is reading an abnormally low resistance, which the control interprets as a dangerously high temperature. The fault is caused by either a failed thermistor component or a short circuit in the wire harness connecting it to the control board.
Can I fix the E:06 error myself on a Thermador range?
A knowledgeable DIYer can diagnose this fault by using a multimeter to check the resistance of the NTC thermistor after disconnecting it from the harness. If the thermistor reads near zero ohms or a clearly abnormal value, replacing the component is straightforward. However, if the harness is the source of the short, tracing and repairing damaged wiring requires more experience and caution, and a professional technician may be advisable in that case.
Is it safe to use my Thermador range while the E:06 code is active?
It is not recommended to continue using the appliance while E:06 is active. The control has faulted because it cannot reliably monitor temperature, which means it cannot prevent overheating conditions. Operating the appliance without a functioning temperature sensor creates a potential safety risk and could cause further damage to internal components.
How much does it cost to repair a Thermador E:06 error?
If the NTC thermistor itself is the cause, parts costs are typically modest, with the sensor component generally ranging from around $20 to $80 depending on availability. If a professional technician is needed for diagnosis and replacement, total repair costs including labor typically range from $100 to $300. A damaged wire harness can add to both parts and labor costs if a new harness or repair work is required.
Will resetting the appliance clear the E:06 error on a Thermador range?
Resetting the appliance by disconnecting power may temporarily clear the E:06 code, but the fault will return as soon as the control board re-checks the thermistor circuit and detects the short. A reset does not address the underlying hardware problem. Permanent resolution requires replacing the faulty thermistor or repairing the damaged wire harness.

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