Fisher & Paykel Dishwasher Error Code F51

F51 means the lid actuator motor failed to turn when the dishwasher attempted to seal the tub at the start of a cycle. The dishwasher stops operation and displays this code to prevent running with an unsealed tub. The cause can range from a simple physical obstruction to a failed motor or wiring fault. Checking for blocked items inside the tub is always the first step.

No, the dishwasher should not be used while F51 is active. The code indicates the tub lid has not sealed properly, and running a cycle in this condition could result in water leaking from the unsealed tub. The machine is designed to halt the cycle when this fault is detected to prevent that outcome.

If the cause is simply an obstruction, there is no parts cost involved. If the lid actuator motor needs replacement, parts and labor costs typically range from around $150 to $350 depending on your location and the specific model. A control board replacement, if needed, can push the total cost higher, generally in the range of $250 to $500 or more for parts and labor combined.

Start by opening the drawer and carefully checking the tub interior and sealing rim for any items, debris, or displaced rack components that could be blocking the lid. If the tub is clear and the error persists, the lid actuator motor, its wiring harness, or the control board may need to be inspected and tested. Repairs beyond clearing obstructions typically require partial disassembly of the drawer unit and some electrical testing.

A reset may temporarily clear the code from the display, but the fault will return immediately on the next cycle attempt if the underlying problem has not been resolved. If a physical obstruction was present and has been removed, a reset should allow normal operation to resume. For electrical or mechanical faults, the error will reappear until the faulty component is repaired or replaced.