Thermador error code · Temp Sensor Fault
Thermador Oven Temperature Sensor Fault (Open / Shorted RTD)
A Thermador oven temperature sensor fault means an open or shorted RTD probe. The control loses heat feedback and stops heating; the sensor is replaced.
A Thermador oven temperature sensor fault means the control has read the oven RTD (resistance temperature detector) probe as open, shorted, or out of its valid resistance range. Without trustworthy temperature feedback the control stops heating to avoid running the oven blind, and the sensor or its wiring almost always needs replacement.
Temp Sensor Fault, explained
Thermador ovens regulate temperature with an RTD sensor whose resistance changes predictably with heat (about 1080 to 1090 ohms near room temperature on common Thermador platforms). The control constantly reads this resistance; if it goes to infinity (open), near zero (short), or an impossible value, the control logs a sensor fault and shuts down the heating circuits. The exact on-screen code varies by model and generation, so the precise fault number should be confirmed against the model and service manual.
Severity:Service needed · Appliance:Wall Oven
Frequently asked
Thermador Temp Sensor Fault — questions
What is an oven temperature sensor fault on a Thermador?
It means the RTD probe that tells the control how hot the oven is has gone open, shorted, or out of range. The control loses reliable temperature feedback and stops heating until the sensor is replaced or its wiring is fixed.
Can I replace the Thermador oven sensor myself?
We do not recommend it. Confirming the fault requires measuring resistance at the control connector, and routing the new probe involves pulling the oven and line-voltage wiring. A technician verifies the reading so you do not replace a good sensor.
What resistance should a Thermador oven sensor read?
Many Thermador RTD sensors read roughly 1080 to 1090 ohms at room temperature and rise with heat. An open reads infinite and a short reads near zero. The exact spec depends on the model, so it should be confirmed against the service manual.
Why is my Thermador oven not holding temperature?
A drifting or intermittent sensor is a leading cause. If the probe reads slightly off rather than fully open or shorted, the oven may heat but overshoot or undershoot the set point, causing uneven cooking.
Is it safe to keep using the oven with a sensor fault?
When the control detects the fault it usually cuts heating, so it is not dangerous, but you cannot cook reliably. If the oven still heats but runs hot or cold, stop using it until the sensor is checked.
How long does a sensor replacement take and is it warranted?
Most sensor replacements are completed in a single visit once we confirm the fault during the flat $89 diagnostic. Every repair is backed by a 365-day warranty. Call (650) 668-1554 to book.
Why Temp Sensor Fault appears
The probe degrades from years of high-heat and self-clean cycles, the connector at the back of the cavity loosens or corrodes, and the harness can chafe or break near the bushing where it passes through the rear wall. A control that misreads a good sensor is less common but possible.
How Temp Sensor Fault shows up
- Oven will not reach or hold the set temperature
- Food cooks unevenly, undercooks, or burns
- A temperature-sensor or probe error appears on the display
- Oven heats briefly then quits, or never starts heating
- Temperature readout reads wildly high, low, or erratic
What usually causes it
- Open (broken) RTD oven temperature sensor
- Shorted RTD sensor reading near zero ohms
- Loose or corroded sensor connector at the rear of the cavity
- Chafed or broken sensor harness behind the oven
- Control board misreading an otherwise good sensor (less common)
Which part Temp Sensor Fault points to
- Oven temperature sensor (RTD probe) — Primary repair when resistance is open, shorted, or out of range
- Sensor connector / harness — Replaced when the probe tests good but the connection is corroded or broken
What you can safely check
- Power-cycle the oven at the breaker for two minutes to rule out a momentary glitch
- Note whether the oven never heats or only fails to hold temperature, which helps narrow the fault
- Avoid running self-clean, whose extra heat can finish off a marginal sensor
- Write down the exact code or message shown so it can be matched to the model
When Temp Sensor Fault needs a technician
Confirming an open or shorted RTD means measuring its resistance at the control connector and comparing against the spec for that model, plus routing a new probe through the rear cavity bushing, which requires pulling the oven and handling line-voltage wiring.
Got Temp Sensor Fault?
We'll pinpoint it and bring the right part. $89 diagnostic, 365-day warranty.
Book a technicianSubzero Repair · Open 24/7 · 365-day warranty
Need Thermador repair in the Bay Area?
Call for urgent cooling or cooking failures, or book online for a service window across the Bay Area.