Bosch Dishwasher Error Code E06 — Door Switch / Aqua Sensor Fault
What this means
The E06 error indicates a problem with the door switch circuit or the Aqua Sensor (turbidity sensor) that measures water clarity. A faulty door switch prevents the dishwasher from starting, while a failed Aqua Sensor causes incorrect cycle adjustments.
Alternate codes: E6
Step-by-step fix
3 stepsCheck the door latch
Close the dishwasher door firmly and listen for a click. If the latch does not engage, inspect it for damage or misalignment.
A warped or cracked door latch is the most common cause of this error.
Test the door switch
Unplug the dishwasher and use a multimeter to test the door switch for continuity when the door is closed.
The switch should show continuity when the door is latched and no continuity when open.
Inspect the Aqua Sensor
The Aqua Sensor is located in the sump area. Clean it of any film or debris and check its wiring connections.
Hard water deposits on the sensor can cause false readings.
When to call a professional
If both the door switch and Aqua Sensor check out fine, there may be a wiring issue or control board fault requiring professional diagnosis.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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