How a Frigidaire dishwasher reports a fault
A modern Frigidaire dishwasher reports lowercase “i” fault codes, often shown as a flashing two-digit set, plus a few two-letter status codes. Reading the code points an experienced technician at a specific part, from the inlet valve to the drain pump to the control board. Older models with no display blink the cycle light in patterns instead and are read by symptom.
The codes you will see
i10 means the water did not enter fast enough — a closed supply valve, a kinked hose or a clogged inlet screen. i20, i40 and iF0 are the same drain-restriction family: a clogged filter or glass trap, a kinked drain hose or a blocked air gap. i30 is a leak or flood-float trip in the base pan. iC0 is a control-communication error between the panels. UO is a vent fault, ER a stuck touchpad key, CL an open door, PF a power failure and HO a normal heat delay while the water warms.
What to check, and when to call
For an i20, i40 or iF0, clean the filter assembly and glass trap and verify the drain-hose high loop — this resolves most drain faults. For an i10, confirm the supply valve is fully open. A PF clears with START/CANCEL, and HO is not a fault. A recurring leak (i30), control-communication (iC0), configuration (CE) or stuck-key (ER) code needs an experienced, independent technician with the correct genuine OEM part. See the dishwasher error codes page or the error codes library, then book dishwasher repair.