Thermador Oven Error E124

⚡ Quick Answer: The Thermador oven error E124 indicates a malfunction related to the oven door switch or latch circuitry. Symptoms include the error code displayed on... ✅ DIY Fixable

What Does Error E124 Mean?

The Thermador oven error E124 indicates a malfunction related to the oven door switch or latch circuitry. Symptoms include the error code displayed on the panel, failure to start, or inability to recognize if the door is closed. This issue often leads to inconsistent heating or failure to reach set temperatures, requiring user intervention or professional repair for resolution.

Common Symptoms:

  • Error code displayed on panel related to oven door operation
  • Oven may fail to start or recognize door closed state
  • Error persists after basic reset attempts

Possible Causes

  • Door switch and door latch disagreement or failure (medium)
  • Faulty electronic control board (less common community suggestion) (low)

How to Fix Error E124

DIY Fix Basic door component check and power reset

  1. Turn off and disconnect oven power (breaker or unplug) for safety.
  2. Visually check door switch and latch area for obvious damage or misalignment.
  3. Reconnect power and attempt a reset by turning oven on to see if code clears.

Technician Only Inspect and repair/replace door switches and wiring harness

  1. Disconnect oven power.
  2. Remove oven front panel to access door switches and latch assembly.
  3. Inspect wiring harnesses for loose or damaged connections between door switches and control board.
  4. Test door switches for continuity and proper operation.
  5. Replace defective door switch or latch assembly as needed and reassemble.
  6. Restore power and test oven operation.

Parts needed: door switch, door latch assembly, wiring harness

Technician Only Control board diagnosis and replacement (if applicable)

  1. Verify that door switches and wiring are functioning correctly.
  2. Test control board inputs related to door switches for expected signals.
  3. If control board inputs are unresponsive despite good switches, replace the control board.
  4. Reassemble and test oven operation.

Parts needed: electronic control board

🛑 When to Call a Pro:
  • If the error persists after basic user-level inspection and reset
  • If internal wiring, door switch, or control board testing is beyond user capability
  • If oven exhibits additional failure modes such as no power at all

Technical Specifications

wattage 3000W
component Heating Element
resistance 10-30 ohms
part_number Thermador 00421220
voltage_rating 240V AC

Common Questions

What does E124 error mean on Thermador oven?

E124 indicates a door switch or latch issue, affecting oven startup and heating.

Can I fix Thermador oven E124 error myself?

Yes, check the door switch and latch, and perform a power reset.

How much does it cost to fix E124 error?

Repair costs range from $100 to $300, depending on parts and labor.

When should I call a technician for E124?

Call a technician if the error persists after your inspection or if you can't perform advanced diagnostics.

Data last verified: 2026-03-25

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