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

  1. Turn off and disconnect the oven from mains power.
  2. Wait ~5–10 minutes and reconnect to reset any transient faults.
  3. Try to start the oven to see if the error persists.

Technician Only Inspect and test temperature sensor assembly

  1. Disconnect oven from power and access the oven cavity’s temperature sensor.
  2. Visually inspect sensor and wiring harness for damage or loose connections.
  3. Use a multimeter to measure sensor resistance against expected values for that model.
  4. Replace temperature sensor if out of tolerance or visibly damaged.
  5. 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

  1. If sensor and wiring test normal, inspect control board for signs of damage.
  2. Use diagnostic tools to verify sensor signal processing.
  3. Replace control board if defective and linked to persistent E104.
  4. Re-test oven operations after replacement.

Parts needed: Control board

🛑 When to Call a Pro:
  • 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

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: 2026-01-25

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