mypros+
Error code reference

Fisher & Paykel Washer Error Code #51

Diverter valve fault

Fisher & Paykel codesFisher & Paykel washer codes

Diverter valve fault - wash water is not circulating correctly in the re-circulation hose.

First step from the service manual

Check that diverter valve is directing water flow to the correct hose; check for blockage, wiring fault, or Motor Control Module fault; check hoses for leaks and check resistance of diverter valve.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for #51.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What #51 means on a Fisher & Paykel washer

Error code #51 on a Fisher & Paykel washer indicates a diverter valve fault, specifically that wash water is not circulating correctly through the recirculation hose. The diverter valve is an electrically actuated component that controls the direction of water flow within the wash system. During a normal cycle, it must switch water between the main wash path and the recirculation loop at precise intervals. When the machine detects that this circulation is not occurring as expected, it triggers code #51 and halts the cycle to prevent damage or poor wash performance.

The fault can stem from several sources. The diverter valve itself may have failed electrically, meaning its solenoid coil resistance has drifted out of specification or has an open circuit. A wiring fault between the Motor Control Module and the valve is another common cause, as a broken or corroded connection will prevent the valve from receiving the correct signal. Physical blockages inside the valve body or within the recirculation hose can also prevent water from moving correctly even when the valve is electrically sound. Hose leaks in the recirculation line will similarly disrupt proper flow.

Diagnosing this code requires a systematic approach. Start by verifying the diverter valve is physically directing flow to the correct hose, then inspect all recirculation hose connections for leaks or kinks. Use a multimeter to measure the resistance of the diverter valve coil and compare it to specification. If wiring and the valve check out, the Motor Control Module should be evaluated as a potential source of a faulty output signal to the valve.

Source: manufacturer service documentation.

Common causes of #51

  1. 01

    Failed diverter valve coil

    Part replacement

    The solenoid coil inside the diverter valve may have an open circuit or out-of-range resistance, preventing it from actuating. Check the valve's resistance with a multimeter to confirm.

  2. 02

    Blockage in recirculation hose or valve body

    Wiring / connection

    Lint, debris, or a foreign object can block the recirculation hose or the valve itself, stopping water flow regardless of whether the valve operates electrically. Inspect both the hose and valve inlet for obstructions.

  3. 03

    Wiring fault between Motor Control Module and diverter valve

    Wiring / connection

    A broken, corroded, or disconnected wire in the harness running to the diverter valve will prevent the valve from receiving its control signal. Inspect the connector and wiring for visible damage or high resistance.

  4. 04

    Recirculation hose leak

    Part replacement

    A leak at any hose joint or fitting in the recirculation circuit will reduce or eliminate flow, triggering the fault. Check all hose connections for water around the fittings or visible cracking.

  5. 05

    Motor Control Module fault

    Part replacement

    If the diverter valve, hoses, and wiring all test correctly, the Motor Control Module may be failing to send the proper output signal to operate the valve. This is a less common cause and should be diagnosed after ruling out all other possibilities.

See the test procedure for each cause

Frequently asked questions about #51

What does #51 mean on a Fisher & Paykel washer?
Error code #51 indicates a diverter valve fault where wash water is not circulating correctly through the recirculation hose. The diverter valve controls the direction of water flow during the wash cycle, and the machine has detected that circulation is not happening as expected. The washer stops the cycle when this code appears to prevent poor wash results or potential damage.
Can I fix error code #51 myself on a Fisher & Paykel washer?
Some causes of #51 are DIY-friendly, such as clearing a blockage from the recirculation hose or checking that all hose connections are tight and leak-free. Checking wiring connectors at the diverter valve is also within reach for a careful DIYer. However, testing coil resistance requires a multimeter, and replacing the Motor Control Module is a more involved repair that many homeowners prefer to leave to a technician.
Is it safe to keep using my washer when it shows error #51?
It is not recommended to continue running the washer while this error is active. The machine has detected that the recirculation system is not functioning correctly, which means clothes may not be washed properly and an underlying fault could worsen with continued use. Address the cause before running another cycle.
How much does it cost to repair error code #51 on a Fisher & Paykel washer?
Repair costs depend on the root cause. Clearing a hose blockage yourself costs nothing beyond your time, while a replacement diverter valve typically runs in the range of $40 to $120 for the part. If the Motor Control Module needs replacement, parts and labor combined can range from $200 to $500 or more depending on your location and the specific model.
Will resetting my Fisher & Paykel washer clear error code #51?
A reset may temporarily clear the code and allow the machine to restart, but if the underlying fault is still present, the error will return during the next wash cycle. A reset should only be used after you have identified and corrected the cause of the fault, such as removing a blockage or repairing a wiring connection, to confirm the repair was successful.

Related Fisher & Paykel washer codes

All Fisher & Paykel washer codes
View all 175 Fisher & Paykel washer codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass