Bosch Washer - Er:03 Error Code

The washer cannot lock the door.

Meaning

The washer cannot lock the door.

The Bosch Er:03 error code indicates that the washer attempted to lock the door before starting a cycle but the interlock mechanism failed to engage. This prevents the washer from beginning the wash program. The issue may be mechanical, electrical, or caused by misalignment of the door.

Symptoms

  • Washer will not start
  • Door does not click when closing
  • Er:03 appears immediately after pressing Start

Causes

  • Misaligned door
  • Faulty door lock actuator
  • Broken latch mechanism
  • Loose wiring to the interlock
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Step-by-Step Fixes

  • Close the door firmly and retry.
  • Inspect the latch for damage or debris.
  • Reset the washer by unplugging it.
  • Check wiring to the door lock if accessible.
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Safety Notes

  • Avoid slamming the door—this can worsen latch wear.
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Applicable Models

Show Models
  • WFL2060
  • WFR2460
  • WFMC3301
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Related Pages

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Other Bosch Washer Error Codes

Show All Error Codes

Model-Specific Notes

On WFMC models, Er:03 may appear intermittently due to worn latch springs.

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.

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