Frigidaire Dishwasher IC0 error code

Communication error. The electronic control cannot communicate properly with the user interface or another dishwasher component.

Also shown as: IC0, iC0, iCo

Last updated: October 6, 2026

Quick answer: Frigidaire dishwasher error code IC0: board communication error. The most common cause is loose wiring connection between boards. Try this first — power-reset for 5 minutes. If that does not clear it, test the controls after reset. If the code persists, call a qualified technician.

What causes the IC0 error?

  • Loose wiring connection between boards
  • Failing main control board
  • Failing user interface board
  • Power surge disrupting board communication
  • Corroded connector

How to fix Frigidaire IC0 — step by step

Work through these in order, from simplest and safest first. Stop as soon as the code clears.

  1. Power-reset for 5 minutes
    Unplug the dishwasher or turn off its circuit breaker for 5 minutes, then restore power. The boards re-run their startup handshake. If IC0 clears and stays away, it was a glitch.
  2. Test the controls after reset
    After the reset, press a few buttons and try to start a short cycle. Unresponsive buttons plus a returning IC0 point to a real board or wiring fault rather than a glitch.
  3. Check warranty status
    If the dishwasher is less than a year old, call Frigidaire warranty service. Board replacement under warranty costs you nothing.
  4. Call a technician for board diagnosis
    A persistent IC0 means the main control board, the user interface board, or the wiring between them needs professional diagnosis and usually board replacement.
Related guide: Dishwasher troubleshooting — fix common problems, with links to every dishwasher error code we cover.

When to call a technician

Stop and call a qualified technician if any of these apply:
  • IC0 returns after a power reset
  • All buttons are unresponsive
  • A control board needs replacement
  • The wiring harness between boards is damaged

Frequently asked questions

iC0 vs ic0 vs iCo: are they different?

It is the same code. Frigidaire displays it as iC0, ic0, or iCo depending on the model's display. All three mean a communication error.

Can the dishwasher run with IC0?

The control cannot coordinate the cycle, so buttons may do nothing and the dishwasher will not start. It is effectively locked out until communication is restored.

Will a reset permanently fix IC0?

If a glitch caused it, yes. If a board or connector is failing, the code returns as soon as the boards try to talk again.

Sources

Every meaning and fix above was checked against official manufacturer documentation:

FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.

Related error codes

Bosch E15 Bosch E24 Bosch E25 Bosch E22 Bosch E23 Bosch E09 Bosch E12 Bosch E14

All Dishwasher error codes across brands · All Frigidaire codes →