Kenmore Washing Machine F51 error code

The motor rotor position sensor (RPS) has failed. The control cannot tell where the motor rotor is, so it cannot run the wash or spin cycle.

Also shown as: F51, F 51

Last updated: October 6, 2026

Quick answer: Kenmore washing machine error code F51: motor position sensor failed. The most common cause is failed rotor position sensor (RPS) on the drive motor. Try this first — power-reset the washer. If that does not clear it, check under and around the basket.

What causes the F51 error?

  • Failed rotor position sensor (RPS) on the drive motor
  • Loose or damaged wiring to the RPS
  • Failing drive motor or stator
  • Worn bearings causing erratic basket movement

How to fix Kenmore F51 — step by step

Work through these in order, from simplest and safest first. Stop as soon as the code clears.

  1. Power-reset the washer
    Unplug the washer for 10 minutes, then plug it back in. Start a cycle and watch whether F51 comes back. A one-time glitch sometimes clears.
  2. Check under and around the basket
    With the washer unplugged and empty, look for clothing stuck between the spin basket and the outer tub. Remove any obstruction and confirm the basket turns by hand.
  3. Reseat the RPS wiring
    Unplug the washer and reach the drive motor area. Find the small RPS sensor clipped to the motor with its thin wires, and push the connector on firmly. Restore power and test.
    Safety warning: Unplug the washer before touching the motor or sensor wiring.

When to call a technician

Stop and call a qualified technician if any of these apply:
  • F51 returns after a reset and wiring check
  • The RPS sensor assembly needs replacement
  • The drive motor or stator is failing
  • Bearings are noisy or the basket wobbles

Frequently asked questions

What is the RPS sensor?

The rotor position sensor sits on the drive motor and tells the control board the exact position of the motor rotor. The washer needs that signal to run the motor correctly.

Why does F51 keep coming back?

The RPS sensor itself has usually failed. It is a common wear part on these top-load washers, and replacing the sensor assembly is the standard fix.

Is this a big repair?

It requires reaching the motor under the tub, so most owners call a technician. The sensor is inexpensive, but the labor involves real disassembly.

Sources

Every meaning and fix above was checked against official manufacturer documentation:

FixCode provides general troubleshooting information only — not professional repair advice. If you are unsure about any step, stop and call a qualified technician. Repairs done incorrectly can be dangerous and may void your warranty.

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