Bosch Oven Error F03

⚡ Quick Answer: The Bosch oven error F03 indicates a malfunction related to the door lock mechanism or associated sensors, particularly during self-cleaning cycles. C... ✅ DIY Fixable

What Does Error F03 Mean?

The Bosch oven error F03 indicates a malfunction related to the door lock mechanism or associated sensors, particularly during self-cleaning cycles. Common symptoms include the oven door locking and failing to unlock, as well as erratic temperature readings. If the error persists even after a power reset, it may indicate a fault in the door lock assembly or its wiring.

Common Symptoms:

  • F03 appears during or after a self‑cleaning cycle
  • Oven door locks and fails to unlock
  • Error clears temporarily after power reset but may return

Possible Causes

  • Door lock assembly or latch mechanism fault (medium)
  • Door lock sensor or wiring fault (medium)

How to Fix Error F03

DIY Fix Reset oven power

  1. Turn off the oven via the wall switch or circuit breaker.
  2. Leave off for at least 5–10 minutes to fully reset the control board.
  3. Restore power and check if the F03 code clears.

DIY Fix Check door lock status

  1. Verify the oven door is fully closed and latched.
  2. Ensure nothing obstructs the door or latch.
  3. Attempt a normal bake cycle to see if the code reappears.

Technician Only Inspect/replace door lock assembly

  1. Disconnect oven from mains power.
  2. Access and inspect the door lock assembly and related sensors for damage or wear.
  3. Test continuity of lock sensor switches; replace assembly if faulty.

Parts needed: Door lock assembly, Latch switches, Associated wiring harness

Technician Only Check wiring and sensor continuity

  1. Disconnect power and remove access panels.
  2. Check wiring between the door lock sensor and control board for continuity and loose connections.
  3. Repair or replace damaged wiring or sensor components as needed.

Parts needed: Sensor wiring harness, Connector terminals

🛑 When to Call a Pro:
  • If the F03 error persists after reset and basic checks
  • If the door remains locked or mechanical parts are damaged
  • If you are uncomfortable performing electrical or disassembly tasks

Technical Specifications

wattage
component Temperature Sensor
resistance 1,000 ohms at room temperature
part_number 00410056
voltage_rating 120V AC

Common Questions

What does F03 error mean on bosch oven?

F03 indicates a door lock mechanism or sensor fault, especially during self-cleaning.

Can I fix bosch oven F03 error myself?

Yes, you can reset the oven or check the door lock status to troubleshoot the issue.

How much does it cost to fix F03 error?

Repair costs range from $80 to $250, depending on parts and labor.

When should I call a technician for F03?

Call a technician if the error persists after a reset or if the door remains locked.

Data last verified: 2026-01-16

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