Siemens Oven Error E104
⚡ Quick Answer: The Siemens oven error E104 signifies a malfunction related to the internal temperature sensing system. This error typically arises from a faulty temp... ✅ DIY Fixable
What Does Error E104 Mean?
The Siemens oven error E104 signifies a malfunction related to the internal temperature sensing system. This error typically arises from a faulty temperature sensor (PT1000/PT500) or wiring issues, leading to improper temperature measurement. Symptoms include the oven displaying E104 upon startup or during heating cycles, repeated attempts to start, and an inability to heat due to sensor failure.
Common Symptoms:
- Error appears when powering on or during heating cycles
- Oven repeatedly attempts to start then displays E104
- Oven may refuse to heat due to inability to read temperature
Possible Causes
- Faulty internal temperature sensor (PT1000/PT500) (medium)
- Wiring/connection issue between temperature sensor and control board (medium)
- Control board misinterpreting sensor signal due to electronics issue (low)
How to Fix Error E104
DIY Fix Basic checks and power reset
- Turn off and disconnect the oven from mains power.
- Wait ~5–10 minutes and reconnect to reset any transient faults.
- Try to start the oven to see if the error persists.
Technician Only Inspect and test temperature sensor assembly
- Disconnect oven from power and access the oven cavity’s temperature sensor.
- Visually inspect sensor and wiring harness for damage or loose connections.
- Use a multimeter to measure sensor resistance against expected values for that model.
- Replace temperature sensor if out of tolerance or visibly damaged.
- Check continuity of wiring from sensor to control board and repair/replace as needed.
Parts needed: Temperature sensor (PT1000/PT500), Sensor wiring harness/connectors
Technician Only Control board diagnostics and replacement
- If sensor and wiring test normal, inspect control board for signs of damage.
- Use diagnostic tools to verify sensor signal processing.
- Replace control board if defective and linked to persistent E104.
- Re-test oven operations after replacement.
Parts needed: Control board
- If you are not comfortable working with mains‑connected appliances
- If testing reveals component failure beyond basic user checks
- If error persists after sensor and wiring inspection
Next step
Choose the next step for E104
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Temperature Sensor
Monitors the internal temperature to ensure correct operation and prevent overheating.
- Typical part-only price
- $15 - $35
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
Main Control Board
The central brain of the appliance that controls all components, cycles, and timings.
Model-compatible Oven parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Non-Scratch Cooktop Cleaner
A routine surface-care product. Confirm that it is approved for the specific glass, ceramic, enamel, or stainless finish.
Oven Thermometer
A diagnostic aid for comparing cavity temperature during a controlled check. It does not prove which internal component has failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| wattage | 2500W |
|---|---|
| component | Heating Element |
| resistance | 20-30 ohms |
| part_number | Siemens 00631816 |
| voltage_rating | 230V AC |
Common Questions
What does E104 error mean on Siemens oven?
E104 indicates a fault in the oven's temperature sensing system, often due to a faulty sensor or wiring issue.
Can I fix Siemens oven E104 error myself?
Yes, you can perform basic checks and power resets. Disconnect the oven, wait 5-10 minutes, and reconnect to see if the error persists.
How much does it cost to fix E104 error?
Estimated repair costs for the E104 error range from $30 to $150 for parts, depending on your region and model.
When should I call a technician for E104?
Call a technician if you're uncomfortable working with electrical appliances or if the error persists after basic troubleshooting.
Sources & References
Data last verified: 2026-07-22
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