What i57 / i59 / i5B Means
These three codes cover the motor control board’s own current measurement. i57 is a Vbat voltage plausibility or ADC error, i59 an error in the current-reading chain (the three phase currents should add up to nearly zero), and i5B a wash or drain pump current that does not change as expected.
Common Causes of i57 / i59 / i5B
- Motor control board measurement circuit failed
- Pump wiring intermittent
🔧 One Safe Check You Can Try
Reset at the breaker. The measurements behind these codes are internal to the board.
⚠ Why You Shouldn't Go Further Than That
- Board diagnostics need service mode and test equipment.
- Replacing a pump for a board measurement error does not fix it.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.