E26
Bosch
Water Softener / Turbidity Sensor Fault
Dishwasher shows E26, often related to the water softener or turbidity sensor.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Defective turbidity sensor, Wiring issue to sensor, Blocked sensor window, Faulty softener electronics
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing the sump or side assemblies.
- Locate turbidity sensor: On many Bosch models, the turbidity sensor is mounted in the sump or side wall and detects water clarity.
- Inspect and clean: Remove the sensor if possible and clean the optical window with a soft cloth. Remove any film or residue.
- Check wiring: Ensure the sensor connector is secure and free of corrosion.
- Test sensor: Measure resistance or follow Bosch diagnostic procedures to verify sensor function. Replace if out of spec.
- Softener check: Ensure the salt reservoir is filled and no heavy salt bridging is present.
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Repair Difficulty
Medium
3/5
Required Part
Turbidity Sensor
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