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Error code reference

Bosch Washer Error Code Er:01

Door open

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What the Er:01 error code actually means

Your Bosch washer is detecting that the door is not fully closed or locked, so it will not start a wash cycle. Make sure the door is firmly shut until you hear a click, and check that no clothing is caught in the door seal. If the door appears closed but the error persists, the door lock mechanism itself may need to be inspected or replaced.

Diagnostic procedure

The full Er:01 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check that door is properly closed and door lock is engaged.
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Most common causes of Er:01

Ranked by how often they cause this code
  1. 1Door not fully latched
  2. 2Laundry or debris caught in door seal
  3. 3Faulty door lock assembly
  4. 4Broken or cracked door latch strike
  5. 5Loose or damaged wiring to the door lock

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Questions people ask about Er:01

What does Er:01 mean on a Bosch washer?
Er:01 means the washer's control system has detected that the door is not closed or the door lock has not engaged. The machine will not begin a cycle until it receives a confirmed signal from the door lock interlock. Check that the door is firmly latched and that nothing is blocking the door seal. If the error continues after confirming the door is shut, the door lock assembly may be faulty.
Is it safe to use my Bosch washer when Er:01 is displayed?
No. The Er:01 code is a safety interlock and the washer will not operate while it is active. This prevents the machine from filling with water while the door is unsecured, which could cause flooding or injury. Do not attempt to bypass the door lock. Resolve the underlying cause before running a cycle.
How much does it cost to fix a Bosch washer showing Er:01?
If the fix is simply closing the door properly or clearing a blocked gasket, there is no parts cost. Replacing a door lock assembly typically costs between $30 and $90 for the part, with professional labor adding $80 to $150 depending on your location. Replacing a cracked door latch strike is generally less expensive than replacing the full lock assembly.
How do I fix the Er:01 error on my Bosch washer?
Start by pressing the door firmly closed until you hear a click, and remove any laundry caught in the door gasket. If the error clears, the issue was simply an unlatched door. If it persists, inspect the door latch strike for cracks and the door lock assembly for wear or damage. A faulty door lock assembly will need to be replaced to resolve the error permanently.
Will resetting my Bosch washer clear the Er:01 error?
A reset may temporarily clear the display, but the error will return immediately if the door lock is not engaging properly. To reset, turn the cycle selector to the off position, wait a minute, and restart. If Er:01 reappears as soon as you try to start a cycle, the door latch or lock assembly needs to be inspected and likely replaced.

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