Maytag Washer Error Code d9 (washer)

The d9 code on a Maytag washer means the machine detected incoming AC voltage below 90 VAC for 8 continuous seconds. The washer shuts down to protect its electronics and motor from damage caused by running on insufficient power. The fault involves the voltage monitoring circuit, the RFI filter, and the transformer.

No, you should not continue running the washer while the d9 code is active. The machine shuts down specifically to prevent damage from low voltage operation. Running motors and electronics below their rated voltage can cause overheating, premature failure, or component damage. Diagnose and resolve the underlying cause before resuming normal use.

Repair costs vary depending on the cause. If the issue is a loose wire harness connection, there may be no parts cost at all, though a service call from a technician could run anywhere from $75 to $150 or more. If the RFI filter or transformer needs replacement, parts and labor combined could range from $150 to $350 or higher depending on your location and the specific parts required.

Some causes of the d9 error are DIY-friendly. You can clear the code, unplug the washer, and inspect the wire harness connection between the RFI filter and transformer for loose or corroded connectors. You can also test your wall outlet voltage with a multimeter to rule out a household power supply issue. If internal components like the RFI filter or transformer need replacement, comfort with appliance disassembly is required.

Clearing the error code is the first diagnostic step, but it will not resolve the underlying problem if low voltage conditions persist. If the voltage issue is still present when the washer restarts, the d9 code will return within 8 seconds of the voltage dropping below 90 VAC. The root cause must be corrected to prevent the code from recurring.