Gregory G Riverhead , NY January 09, 2015 Appliance: Maytag Washer MVWB300WQ2 Maytag Washer Mvwb300wq2 / : Washing machine would shut off in spin cycle and display "f51" error code. How to replace Washer Rotor Position Sensor. I took the washer out to the garage, tipped it over, removed the back and got access to the sensor. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes