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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