f43
Moderate
Bosch · Ovens & Ranges
Upper oven motorized latch will not unlock
Quick Answer
Error code F43 on your Bosch Ovens & Ranges means: Upper oven motorized latch will not unlock. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Turn off the oven at the circuit breaker and allow it to cool.
2
Lubricate the door lock mechanism.
3
Carefully try to pry the door open if it is stuck (use caution).
4
Inspect the door hinges for proper tension.
5
Check the door gasket for damage or misalignment.
6
If the lock mechanism is damaged, replace it.
7
Check all electrical connections and replace the power board if needed.
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Door lock assembly
Lubricant
Door gasket
Power board (if needed)
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