Electrolux Dishwasher Error Code i51

The i51 code means the control board has detected that the AC wash pump motor is running without receiving a software command to do so, which indicates a short circuit condition in the pump circuit. The heater is also disabled as a safety measure. The dishwasher will fill with water until the pressure switch activates, then stop after an 8-second timeout. Diagnosis should begin with a thorough inspection of the pump motor wiring harness.

No, you should not continue running the dishwasher while the i51 error is active. A short circuit in the pump motor circuit is an electrical fault that can cause component damage or create a safety hazard if left unaddressed. The machine will not complete a wash cycle anyway because it shuts down after detecting the fault.

Repair costs depend on the failed component. Replacing a wiring harness or pump motor connector typically runs in the range of $50 to $150 in parts, with labor added if using a technician. A replacement circulation pump motor can cost between $80 and $200 in parts. If the control board is at fault, parts alone can range from $150 to $350 or more, making professional diagnosis first a worthwhile step to avoid unnecessary part replacement.

A knowledgeable DIYer can inspect the wiring harness for visible damage, corrosion, or pinched wires and clean corroded connectors without special tools. However, testing motor winding resistance and diagnosing a faulty control board relay requires a multimeter and familiarity with electrical components. If the fault is traced to the motor itself or the control board, professional repair is recommended to avoid further damage or safety risks.

Resetting the dishwasher may temporarily clear the error display, but the i51 code will return as soon as the control board detects the unauthorized pump activity again during the next cycle. The underlying short circuit condition must be located and repaired for the error to clear permanently.