Electrolux Washer Error Code E51

E51 indicates that the motor supply triac has been detected in a short-circuit condition. The triac is a component on the main control board responsible for switching power to the drive motor. The washer's protection system activates this code after 5 failed attempts, or immediately if the short is detected at cycle start or during diagnostics. The machine shuts down to prevent further damage to the motor circuit.

No, you should not continue running the washer while E51 is active. A shorted motor supply triac means the motor circuit has lost proper electrical control, which presents a risk of further damage to the motor, wiring, or control board. The washer's protection system shuts the machine down for this reason, and operating it in this state could worsen the fault and increase repair costs.

Repair costs depend on what component is at fault. If the issue is only a loose connector, there may be no parts cost beyond a service call fee, which typically ranges from $75 to $150. If the main control board needs replacement, parts and labor combined can range from $200 to $450 or more depending on the model and local labor rates. A motor replacement would fall in a similar or higher range.

The first step you can safely perform yourself is checking that all wiring connectors are fully and firmly seated. Beyond that, diagnosing E51 requires measuring for current leakage between the J7 connector terminals and the machine frame, which involves working near live AC circuits and requires proper test equipment. If the triac on the control board is confirmed shorted, replacing the main PCB is typically required, which is a job best handled by a qualified technician.

A power reset may temporarily clear the displayed code, but if the underlying short circuit condition still exists, E51 will return, often immediately at the start of the next cycle or within 5 attempts. Because the protection system is designed to detect a genuine hardware fault, clearing the code without repairing the cause will not resolve the problem.