iC0 Moderate Moderate DIY

Frigidaire Dishwasher iC0 — Communication error

Frigidaire Dishwasher · Error code iC0

What iC0 Means

The user-interface board and the main control board can no longer talk reliably. The dishwasher cannot accept commands or report state.

Symptoms

  • Buttons unresponsive
  • iC0 displayed on power-up
  • Display blank or flickering
  • Cycle won't start or aborts immediately

Common Causes

1
Loose ribbon cable between UI and main board

Door slamming can vibrate the connector loose.

2
Damaged ribbon cable

Crimped or chafed cable inside the door.

3
Failed user-interface board

UI MCU stops responding to polls from the main board.

4
Failed main control board

Comm UART failure on the main board.

How to Fix It

  1. Power off at the breaker for 5 minutes.
  2. Remove the inner door panel and reseat the ribbon cable at both ends.
  3. Inspect the ribbon for kinks, tears, or corrosion.
  4. Replace the ribbon cable if damaged.
  5. Swap in a known-good UI board if communication still fails.
  6. Replace the main control board last.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement Frigidaire dishwasher user interface board View on Amazon→ Common replacement Frigidaire dishwasher main control board View on Amazon→

More Frigidaire Dishwasher Codes

Cd Cd — Clean indicator CL CL — Close the door ER ER — General electronic control fault Hot Hot — Water inlet too hot HS HS — Heater sensor fault i10 i10 — Water Not Detected (Fill)

All Frigidaire codes → All dishwasher codes →

Verified against manufacturer documentation: frigidaire.com

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.