F31
KitchenAid Motor Control or Speed Sensing Error

Washer shows F31 and may not spin at high speed or may stop during spin.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Defective motor control board, intermittent motor harness connection, failing drive motor, control board speed sensing circuit fault

How to Fix / Troubleshooting

Safety First: Disconnect power and secure the washer before working at the rear or base.

Step-by-step checks:

  • Inspect harness: Check all wiring between the main control, motor control (if separate), and motor for loose or damaged connections.
  • Test motor: Verify motor windings and tachometer as in F06/F25.
  • Control board check: Inspect the motor control board for burnt components or cracked solder joints.

When to replace: Replace the motor control board if the motor tests good but F31 persists. If the motor is defective, replace the drive motor assembly.

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Repair Difficulty

Hard 4/5

Required Part

Motor Control Board (MCU)
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