ERROR CODE EXPLAINED
Bosch Home Connect App
Bosch Home Connect App H9400 Error Code
What it means
Bosch says H9400 means Bluetooth search timed out before a suitable appliance was found for pairing.
Try this first
- Wait at least 10 seconds after switching on the appliance before starting pairing.
- After an appliance restart, reset, or network reset, wait at least 1 minute before starting pairing and activating Bluetooth through Remote Start.
- If the error occurs repeatedly, restart the appliance.
- As an alternative, pair manually using "Add another home appliance".
Can I keep using it?⚠ Bosch says H9400 means Bluetooth search timed out before a suitable appliance was found for pairing.
Repair usually required?⚠ Follow only the manufacturer-backed checks listed on this page before replacing parts.
If the error keeps returning
Use the linked official manufacturer support source for additional model-specific guidance.
Official source
Troubleshooting information verified against manufacturer support documentation.
View manufacturer support page →Safety note:ApplianceSignal provides general troubleshooting information. Always follow the appliance manufacturer's safety instructions and disconnect power when required.