Fisher & Paykel Dishwasher Error Code EC

The EC code indicates a communications error between the mains filter board and the dishwasher's controllers. This means the internal circuit boards can no longer exchange signals properly, so the machine stops operating. The error is most often caused by damaged, corroded, or loose wiring harness connections between these components.

A power reset may temporarily clear the EC code if it was triggered by a transient communication glitch, but the error will return if an underlying wiring or component fault is present. Turning the dishwasher off at the wall for a few minutes and restarting is worth trying, but a persistent EC code requires physical inspection of the harness and connections to find the root cause.

Repair costs vary depending on the cause. If the fix is simply cleaning or reseating corroded connectors, the cost may be limited to a service call fee, typically in the range of $80 to $150. Replacing a damaged wiring harness or a faulty mains filter board or controller can bring the total repair cost to anywhere from $150 to $400 or more, depending on parts pricing and labor rates in your area.

A knowledgeable DIYer can begin by inspecting the harness connections between the mains filter board and controllers for corrosion, arcing, or loose plugs, and reseating or cleaning any affected connectors. If the wiring or connectors are physically damaged, replacing the harness is a more involved repair. If both the wiring and connectors look intact, diagnosing a failed board or controller typically requires a technician with component-level testing tools.

You should not continue running the dishwasher while the EC code is active. A communications failure between the mains filter board and controllers means the machine cannot properly coordinate its functions, and the error may be associated with wiring damage that could pose an electrical risk. Leave the dishwasher powered off until the fault is diagnosed and repaired.