Error 16
Jura
Firmware / Internal Communication Fault
Display shows “Error 16”; machine may not start or may freeze during operation.
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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
Corrupted firmware on main board, Internal communication error between CPU and peripherals, Power surge or brownout event, Defective main control board
How to Fix / Troubleshooting
Safety first: Unplug the machine before any internal inspection.
Step 1 – Hard reset:
- Turn the machine off with the main switch and unplug it for at least 15 minutes.
- Plug back in and power on; observe if the error reappears.
Step 2 – Check power quality:
- Ensure the machine is connected directly to a wall outlet, not a faulty power strip.
- If your mains supply is unstable, consider using a surge protector.
Step 3 – Internal inspection (advanced):
- Remove the housing (unplug first).
- Inspect the main control board for visible damage or corrosion.
- Reseat all connectors to ensure good contact.
Step 4 – Firmware/board replacement:
- Some Jura models allow firmware updates only via authorized service tools.
- If Error 16 persists, the main control board likely needs replacement by a Jura service center.
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Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
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