Electrolux Dishwasher Error Code i0 (5 blinks)

The i0 error code on an Electrolux dishwasher indicates a circulation pump triac short circuit. The control board is detecting tachometer signals from the circulation pump even though it has not commanded the pump to run. This points to a failed triac on the control board or a fault in the tacho wiring. The dishwasher ends the active program and fills water to the pressure switch level when this fault occurs.

It is not recommended to continue running the dishwasher with the i0 error present. A shorted triac can leave the circulation pump circuit in an uncontrolled state, which puts stress on the motor and the board. The appliance has already ended its program as a protective response, and continued use without diagnosis could lead to additional component damage.

A power reset may temporarily clear the fault display, but the i0 error will return if the underlying cause, such as a shorted triac or faulty tacho wiring, has not been corrected. Because this fault involves a hardware failure rather than a software glitch or sensor misread, resetting alone is not a solution. The fault should be properly diagnosed and repaired before the appliance is returned to regular use.

Technicians and experienced DIYers can start by inspecting the tacho wiring harness for visible damage, pinching, or loose connectors, as these are correctable without major parts. If the wiring is intact, the fault likely lies in the circulation pump triac on the control board, which requires board-level repair or full control board replacement. Working on the control board involves line voltage components, so the dishwasher must be fully disconnected from power before any inspection or repair.

Repair costs vary depending on the root cause. If only the tacho wiring needs repair or a connector replacement, costs are generally low, often just a service call fee in the range of $75 to $150. If the control board requires replacement, parts alone typically range from $100 to $300 or more depending on the model, with labor adding to the total. Getting a diagnostic visit from a qualified technician will clarify the exact fault before committing to parts.