ERROR CODE EXPLAINED
Bosch Dryer
Bosch Dryer E03 Error Code
What it means
The condensation drainage hose is blocked, restricted, or kinked.
Try this first
- Turn the dryer off.
- Inspect the condensation drain hose.
- Straighten any kinked section of hose.
- Check the hose for blockage.
- Check the drain or siphon connection for debris.
- Restart the dryer after correcting the drainage problem.
Can I keep using it?⚠ Check drainage before continuing
Repair usually required?✅ Usually no
If the error keeps returning
If E03 returns with an unrestricted drain hose, further diagnosis may be required.
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.