Bosch Dishwasher E1 Error Code: Causes and Fixes
Quick answer: Door switch/lock state issue
What you’ll notice
Cycle does not start; door lock is not confirming the secured state.
Bosch
Dishwasher
Code E1
low severity
Bosch models: Bosch dishwashers have a three-stage filter: coarse screen, flat micro-filter, and cylindrical fine filter under the lower spray arm. Remove and clean all three together. Bosch drains actively using a pump — any standing water in the sump at mid-cycle is a blockage indicator, not normal residual water.
Common causes
- Door not fully latched
- Door latch hook broken
- Door lock module microswitch failed
Step-by-step fix
- Close the door firmly until you hear the latch click.
- Inspect the latch hook on the door for damage.
- Test the door lock module — press in the lock plunger by hand and listen for a click.
Tools you may need
FlashlightScrewdriver set
Prevention
- Do not force dishwasher doors shut — latch hooks are relatively fragile.
When to stop DIY
Replace the door lock module if the hook is intact but the machine still shows the error.
FAQ
What does E1 mean on Bosch dishwasher?
E1 usually indicates: Door switch/lock state issue.
Can I keep using the appliance with E1?
Use caution. Severity is low. Replace the door lock module if the hook is intact but the machine still shows the error.
How long does this fix usually take?
Typical first-pass troubleshooting takes 5 minutes (close check); 20 minutes (lock module replacement).