Error code reference

Bosch Dishwasher Error Code Er:04

Door actuation defective-mechanical problems, wire harness, triac defective, door relay stuck (fatal error).

SourceBosch Washer - Service Manual: Test Program & Error Codes (WAT/WAW Series)Sheet 2 of 4

Diagnostic procedure

The full Er:04 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

First diagnostic step

Close door, check lock, check wire harness.

SourceBosch Washer - Service Manual: Test Program & Error Codes (WAT/WAW Series)Sheet 2 of 4

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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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Where this code is documented

3 manuals in the MyPros+ library document this code for Bosch dishwasher.

Models covered by the manuals that document this code

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The full Er:04 procedure

Where this code is documented

Models covered by the manuals that document this code

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