Bosch Washer - Er:04 Error Code
The door lock mechanism is defective.
Meaning
The door lock mechanism is defective.
The Bosch Er:04 error code indicates a failure in the door actuation system. This includes the mechanical latch, the lock actuator, and the feedback switch that confirms the locked state. If any of these components fail, the washer cannot safely operate and displays Er:04.
Symptoms
Causes
Step-by-Step Fixes
- Inspect the latch for mechanical wear.
- Reset the washer and retry.
- Check wiring to the lock assembly.
- Replace the door lock mechanism if defective.
Safety Notes
- Do not bypass the door lock—it is a safety device.
Applicable Models
Show Models
- WFL2060
- WFR2460
- WFMC3301
Related Pages
Other Bosch Washer Error Codes
Show All Error Codes
- Bosch Washer CL Indicator
- Bosch Washer Drain Icon Indicator
- Bosch Washer Drum Clean Indicator
- Bosch Washer E00 / -18 Error Code
- Bosch Washer E00 / -23 Error Code
- Bosch Washer E10 / -00 / -10 / -20 Error Code
- Bosch Washer E16 / F16 / E34 / F34 Error Code
- Bosch Washer E17 / F17 / F29 Error Code
- Bosch Washer E18 / F18 Error Code
- Bosch Washer E19 / F19 Error Code
- Bosch Washer E20 / F20 Error Code
- Bosch Washer E23 / F23 Error Code
- Bosch Washer E25 / F25 Error Code
- Bosch Washer E26 / F26 Error Code
- Bosch Washer E28 / F28 Error Code
- Bosch Washer Er:01 Error Code
- Bosch Washer Er:02 Error Code
- Bosch Washer Er:03 Error Code
- Bosch Washer Er:05 Error Code
- Bosch Washer Er:06 Error Code
- Bosch Washer Er:07 Error Code
- Bosch Washer Er:09 Error Code
- Bosch Washer Er:10 Error Code
- Bosch Washer Er:11 Error Code
- Bosch Washer Er:12 Error Code
- Bosch Washer Er:13 Error Code
- Bosch Washer Er:14 Error Code
- Bosch Washer Er:15 Error Code
- Bosch Washer Er:16 Error Code
- Bosch Washer Er:17 Error Code
- Bosch Washer Er:18 Error Code
- Bosch Washer Er:19 Error Code
- Bosch Washer Er:20 Error Code
- Bosch Washer Er:21 Error Code
- Bosch Washer Er:22 Error Code
- Bosch Washer Er:23 Error Code
- Bosch Washer F27 Error Code
- Bosch Washer Key Icon Indicator
- Bosch Washer Pause/Play Flashing Indicator
- Bosch Washer Suds / Foam Indicator
- Bosch Washer Tap Icon Indicator
Model-Specific Notes
On WFL models, Er:04 often indicates a failing microswitch inside the lock assembly.
Disclaimer
The information provided on this page is for educational and informational purposes only. Repairs involve electrical, mechanical, and water-related risks. Always follow manufacturer instructions and consider contacting a qualified technician for diagnosis or repair.