Thermador Oven Error E104

⚡ Quick Answer: The Thermador oven E104 error indicates a malfunction in the upper oven temperature sensor circuit, resulting in inaccurate temperature readings and e... ⚠️ Difficulty Varies

What Does Error E104 Mean?

The Thermador oven E104 error indicates a malfunction in the upper oven temperature sensor circuit, resulting in inaccurate temperature readings and erratic oven behavior. This may lead to the oven failing to maintain the correct temperature. If you encounter this error, it is often accompanied by the E101 code, suggesting similar sensor issues. Possible causes include a faulty temperature sensor, loose wiring, or issues with the electronic control board.

Common Symptoms:

  • Error code E104 displayed on control panel
  • Oven may fail to maintain correct temperature or operate normally
  • Error often appears alongside or interchangeable with E101 in community sources

Possible Causes

  • Upper oven temperature sensor fault (open/short or incorrect resistance) (medium)
  • Loose or damaged temperature sensor wiring harness (medium)
  • Electronic oven control board failure after ruling out sensor issues (low)

How to Fix Error E104

DIY Fix Basic checks and safety

  1. Power off the oven and disconnect from power source.
  2. Check that the oven door is properly closed and that error appears consistently.
  3. Observe if the error clears after resetting power (turn off breaker or unplug for >1 minute).

Technician Only Diagnose and repair temperature sensor issues

  1. Disconnect power at breaker.
  2. Access the upper oven temperature sensor and wiring harness.
  3. Inspect wiring for damage or loose connectors; repair or replace harness as needed.
  4. Measure sensor resistance with a multimeter at ~70°F; expected ~1080 ohms. Replace sensor if out of range.
  5. If sensor and harness are good, test/diagnose electronic oven control board and replace if faulty.

Parts needed: Temperature sensor, Wiring harness, Electronic control board

🛑 When to Call a Pro:
  • If you are uncomfortable working with internal electrical components
  • If error persists after sensor inspection and replacement

Technical Specifications

wattage
component Temperature Sensor
resistance 1000 ohms at room temperature
part_number Thermador 00410037
voltage_rating 120V AC

Common Questions

What does E104 error mean on Thermador oven?

E104 indicates a malfunction in the upper oven temperature sensor, causing inaccurate readings.

Can I fix Thermador oven E104 error myself?

Yes, basic checks like ensuring the door is closed and resetting power can help.

How much does it cost to fix E104 error?

Repair costs range from $80 to $400+, depending on parts and service rates.

When should I call a technician for E104?

Call a technician if you're uncomfortable with electrical components or if the error persists after checks.

Data last verified: 2026-03-25

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