Bosch and Siemens washers (both owned by BSH Home Appliances) share the same error code system. These codes help diagnose issues quickly and efficiently. This guide covers common Bosch/Siemens washer error codes with detailed repair instructions.
Note: Bosch and Siemens are part of the same company (BSH) and use identical error codes. Repairs apply to both brands.
Bosch/Siemens Error Code Reference
| Error Code |
Problem |
Difficulty |
Est. Time |
Fix Guide |
| E01 |
Door Lock Error |
Easy-Moderate |
10-30 minutes for basic fixes, 1-2 hours for lock replacement |
Fix E01 Error → |
| E18 |
Drain Timeout Error |
Easy-Moderate |
20-60 minutes |
Fix E18 Error → |
Most Common Bosch/Siemens Errors
- E18 Error – Drain timeout (very common)
- E01 Error – Door lock failure
- E17 Error – Water inlet issues
- E27 Error – Door switch problems
Quick Troubleshooting for Bosch Washers
First Steps:
- Turn off and on: Press power button, wait 10 seconds, restart
- Clean drain filter: E18 errors usually caused by lint/debris
- Check door seal: Ensure nothing caught preventing closure
- Verify drain hose: Must be 24-39 inches above floor (Bosch spec)
- Use proper detergent: HE detergent only, minimal amount
Bosch Error Code Format
Bosch uses a simple E + number system:
- E01-E09: Door and locking issues
- E10-E19: Water inlet and drain problems
- E20-E29: Drainage and pump errors
- E30+: Various sensor and control issues
Bosch Washer Series
These error codes apply to:
- 500 Series: Entry-level Bosch washers
- 800 Series: Mid-range with more features
- Benchmark Series: Premium line
- Siemens: All models (identical to Bosch)
DIY Repairs vs. Service Call
✅ Easy DIY Fixes:
- E18 – Clean drain filter and hose
- E01 – Check door latch alignment
- E17 – Clean inlet screens
- Filter and hose maintenance
🔧 Consider Professional Service:
- E27 – Door switch replacement
- Pump replacement needed
- Control module errors
- Persistent errors after cleaning
Bosch-Specific Maintenance
Keep your Bosch/Siemens washer running smoothly:
- Every 3-4 months: Clean drain filter (Bosch recommends quarterly)
- Monthly: Wipe door seal, leave door open to dry
- As needed: Run Drum Clean program with Bosch cleaner
- Important: Bosch drain hose height is critical (24-39 inches)
Bosch Support Resources
- Bosch Support: bosch-home.com/us/support
- Siemens Support: siemens-home.bsh-group.com
- Parts: Use genuine Bosch/Siemens parts
