What's Happening

Main board lost communication with multiple components.

How to Fix It

Check all wire connections. If secure, the main board has failed.

Frequently Asked Questions
What does SY CE mean on a KitchenAid fridge?
SY CE is a system-wide communication failure.
Is it worse than CF?
Yes. CF is just the display. SY CE is the main board failing to communicate with multiple systems.
How much to fix?
$150–$350 if the main board needs replacement.