Error 31
Jura Steam Valve Position Fault

Display shows “Error 31”; machine may not detect the steam valve position 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

Stuck steam valve due to milk residue or scale, Faulty steam valve position sensor, Broken valve actuator or motor, Wiring fault to valve or sensor

How to Fix / Troubleshooting

Safety first: Unplug the machine and allow it to cool. Steam can cause severe burns.

Step 1 – Clean milk system and steam wand:

  • Run the automatic milk system cleaning program.
  • Clean the steam wand and nozzle thoroughly.

Step 2 – Descale the machine:

  • Run a full descaling cycle to clear scale from the steam valve.

Step 3 – Internal inspection (advanced):

  • Remove the housing (unplug first).
  • Locate the steam valve and its position sensor.
  • Check for milk residue, scale, or mechanical damage.
  • Clean or replace O-rings and seals as needed.

Step 4 – Replace faulty parts:

  • Replace the steam valve if it is seized or leaking.
  • Replace the position sensor or actuator motor if they do not function correctly.
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Repair Difficulty

Professional Required 5/5

Required Part

Steam Valve Assembly
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