Oven
F22
The F22 error code on a Siemens oven indicates a fault with the door lock mechanism or door lock sensor — it’s a moderately serious fault that will prevent the oven from operating safely until resolved.
What does this error mean?
F22 signals that the oven’s control board cannot confirm the door is properly closed or locked. This is most common on pyrolytic (self-cleaning) Siemens ovens, where a secure door lock is a safety-critical requirement before high-temperature cleaning cycles can begin. The oven detects either a mechanical failure in the locking motor or a faulty signal from the door lock microswitch.
Est. repair cost
£80–£150 professional repair; £15–£60 DIY parts only (seal or door lock assembly)
🔍 Likely causes
🛠️ Step-by-step fix
Power cycle the oven: switch it off at the wall socket or fuse spur, wait 5 minutes, then switch back on. A one-off software glitch can trigger F22 and a reset clears it.
Inspect the oven door seal: open the door and run your fingers around the full perimeter of the rubber gasket. Look for tears, hardening, or sections that have pulled away from the channel. A damaged seal is a cheap DIY fix — replacement Siemens door seals cost £15–£35 and clip in without tools.
Check the door hinges: open the door fully and look for visible play, drooping, or uneven gaps around the door frame when closed. Worn hinges stop the lock from aligning — hinge replacement is a moderate DIY task if you’re confident, otherwise call a technician.
Examine the door lock assembly (visible at the top of the oven door frame): with the oven cold and unplugged, look for obvious signs of damage — broken plastic, a latch that won’t spring back, or a motor that makes no movement. Do NOT attempt to open the oven’s internal wiring or dismantle the control board.
If the error returns after a reset or you find a faulty lock motor/microswitch: order the correct Siemens spare part using your oven’s model number (found on the sticker inside the door frame). Siemens door lock assemblies typically cost £25–£60 as a DIY part. If you are not comfortable accessing the rear of the door panel, stop here and call a professional.
Do not attempt to bypass or disable the door lock: this is a safety mechanism and defeating it creates a serious burn and fire risk.
📞 When to call a professional
Call a qualified appliance engineer if the F22 error persists after a power reset, if the door lock motor needs replacing and you’re not confident with appliance repair, or if you suspect the control board is at fault. When booking, tell the engineer: ‘My Siemens oven is showing an F22 error — I believe it’s a door lock fault’ and give them the full model number so they can bring the right parts.
⚖️ Repair or replace?
A professional repair for an F22 fault typically costs £80–£150 including labour and parts, depending on whether it’s a microswitch, lock motor, or control board. If your Siemens oven is under 8 years old, repair is almost always the right call — Siemens built-in ovens cost £500–£1,200+ to replace. For ovens over 10 years old with repeated faults, replacement becomes worth considering.