E5
Liebherr CAN / Data Bus Communication Error

Error E5; indicates a communication problem between control modules or with the display.

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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

Loose or damaged communication harness, Faulty display module, Faulty main control board, Electrical noise or surge damage

How to Fix / Troubleshooting

Safety first: Unplug the refrigerator before accessing electronic modules.

Step-by-step:

  • Inspect harness: Locate the communication cable between the main PCB and display/UI. Check for damage or loose connectors.
  • Reseat connectors: Unplug and re-plug both ends of the harness.
  • Check for corrosion: Clean any light corrosion with contact cleaner and a soft brush.
  • Power reset: Restore power and observe if E5 returns.

When to call a technician: Persistent E5 usually requires module replacement and should be handled by a professional.

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Repair Difficulty

Hard 4/5

Required Part

Main Control Board or Display Module
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