Steven H Manheim , PA September 19, 2023 Appliance: Frigidaire Washer FFTW4120SW1 Frigidaire Washer Fftw4120sw1: E4 error code. Out of balance. How to replace Suspension Rod. Replaced all four shock springs and agitator. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes