GE Washer Error Code E40

E40 indicates a Variable Speed Drive health error, meaning the inverter that controls motor speed has reported an internal fault. When this error is active, the washer typically cannot spin or agitate. The inverter, also called the VSD, needs to be tested and in most cases replaced to resolve the problem.

A power reset may temporarily clear the E40 code, but if the inverter has an internal fault the error will return as soon as the washer attempts to run the motor. Resetting does not fix the underlying hardware problem. The inverter must be tested and replaced if found to be defective.

If the inverter board needs replacement, parts typically range from roughly $80 to $200 depending on the specific model. Adding professional labor, the total repair cost generally falls between $150 and $350. If the issue turns out to be a wiring or connector problem rather than a failed inverter, the cost can be considerably lower.

The first diagnostic step involves checking for 5 VDC between the black and white wires at inverter connector CN9, which requires a multimeter and comfort working around appliance wiring. If the voltage is present and the washer still will not run, the inverter board needs to be replaced. This is a moderately advanced repair, and homeowners who are not comfortable with electrical testing should call a qualified technician.

It is not recommended to continue using the washer while E40 is active. The error indicates the inverter is not functioning correctly, which means the motor may not operate at all or may behave unpredictably. Running the machine in this state could cause additional stress on connected components.