Frigidaire Dishwasher iC0 — What It Means & How to Fix It
Also shown as iCO on some models.
The dishwasher's control boards have lost reliable communication — the keypad/display board and the main board aren't exchanging signals — which a power reset sometimes clears but otherwise needs a technician.
What this code means
iC0 is a communication fault in the control system: the display board and the main control board can't pass signals back and forth properly. A power glitch can scramble that link for a moment, which is why a reset is the first move. When it sticks, the cause is usually a failed board, a damaged ribbon or connector between them, or moisture in a connection — all of it on the powered control side of the machine.
iC0 — sometimes read as iCO — isn't on Frigidaire's current published list, so check it against your model's tech sheet; independent sources agree it's a control-board communication error. Anything past the power reset means opening up powered control boards, which is technician work.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Temporary control glitch after a power event | Common | Yes — power reset only |
| Damaged ribbon cable or connector between the boards | Common | No — technician job |
| Failed user-interface (display) board | Occasional | No — technician job |
| Failed main control board | Occasional | No — technician job |
What you can try yourself
- Turn the dishwasher off at the breaker for five minutes, then restore power — a one-time communication glitch clears with this and the unit runs normally.
- If it's plug-connected and easy to reach, unplugging for the same five minutes does the same job; don't open the door panel or control housing.
- If iC0 returns, stop and book a repair — the boards and the wiring between them are powered components for a technician to open and test.
- Mention any recent power cut, leak, or steam around the door, since a damp connector is a common trigger and the detail speeds diagnosis.
When to call a technician
- iC0 comes straight back after the power reset.
- The display is partly dead, flickering, or unresponsive alongside the code.
- There's been a leak or steam reaching the door — moisture in the control wiring needs professional attention.
Typical professional repair cost: A user-interface or main control board replacement typically runs $200–$400 with labor; a wiring or connector repair can be less.
Frequently asked questions
How do I reset a Frigidaire dishwasher iC0 code?
Cut power at the breaker, or unplug the unit, for five minutes, then restore it and start a cycle. That clears the communication error if it was a one-time glitch. If iC0 comes straight back, the control boards or their wiring need a technician — it isn't a settings issue.
What does iC0 mean on a Frigidaire dishwasher?
It's a communication error between the dishwasher's control boards — the display/keypad board and the main board aren't exchanging signals reliably. Causes range from a temporary power glitch to a failed board or a damaged connector between them.
Is iC0 the same as iCO with a letter O?
Yes — it's the same code, just hard to read on the display. It's an i, a C, and a zero, signalling a control communication fault. However it's written on screen, the meaning and the fix-it path are identical.
Related Frigidaire codes
- Frigidaire Dishwasher i10 Water isn't reaching the tub fast enough — the under-sink valve, a kinked line, or a stuck float explain most i10 errors before any part needs replacing.
- Frigidaire Dishwasher i20 The unit didn't drain properly — Frigidaire's filters and glass trap clog like any brand's, and the drain hose and disposal connection make up the rest of the usual story.
- Frigidaire Dishwasher i30 Water collected in the pan beneath the tub and the anti-leak response took over — the cause ranges from a one-off overflow or suds episode to a genuine seal failure.
- Frigidaire Dishwasher i60 The water isn't heating the way the cycle requires — the element, its relay, or the temperature sensor is at fault, and all of them are mains-voltage parts for a professional.
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