E13
Bosch
Steam Circuit Temperature / Sensor Fault
Machine shows E13; often associated with steam or hot water functions not working correctly.
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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 steam NTC sensor, Loose sensor wiring, Scale in steam circuit, Faulty control board input
How to Fix / Troubleshooting
Safety first: Unplug the machine and allow it to cool. Steam components can be very hot.
- Descale the machine: Run a full descaling cycle to remove limescale from the steam and hot water circuits.
- Clean steam outlet: Remove and clean the steam nozzle or milk frother parts to ensure proper flow.
- Check for error after cooling: After descaling and cleaning, let the machine cool fully, then power it on and test steam/hot water again.
- If E13 persists: The steam NTC sensor or associated wiring may be defective. Replacement requires internal access; contact Bosch service.
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Repair Difficulty
Hard
4/5
Required Part
Steam NTC Sensor
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