GE Appliances Dishwasher WiFi with Bluetooth Module Service Kit WD21X31758, Replaces WD21X28179, WD21X31600

Is This the Right Part?

✅ Cross Reference Information

Common Symptoms

• The dishwasher cannot be added to the SmartHQ app.
• A previously connected dishwasher no longer appears in the SmartHQ app.
• App-based remote monitoring, control, alerts, or notifications are unavailable while the dishwasher is disconnected.

Check Before Replacing

• Confirm the dishwasher model is listed as compatible with WD21X31758 before diagnosing or ordering the kit.
• Update the SmartHQ app, then sign out/in or reinstall it if app access is the issue.
• Verify the home-network password by reconnecting a phone to that network manually.
• Follow the dishwasher’s documented SmartHQ reconnect process before attributing a connectivity complaint to the module.
• If the dishwasher has a wireless-status icon, note whether it is illuminated; GE’s setup guidance distinguishes an app/cloud issue from missing network connection based on that status.

Pro Tip

Part Details

Installation Notes

• Disconnect power to the dishwasher before disassembly. GE cautions that appliance repair should be performed only by persons with adequate electrical and mechanical repair skills.
• Verify fit by exact appliance model number before installation; GE specifically directs customers to confirm compatibility.
• GE does not provide a downloadable installation manual on the WD21X31758 product page. Use the service information for the exact dishwasher model rather than assuming board location or access steps.
• After replacement, reconnect the dishwasher through the documented SmartHQ built-in WiFi setup process if it is not connected to the home network.

Verified Compatible Models

CDT858P3V3D1, CDT875M5N5S5, CDT875P2N5S1, PDP715SYV1FS, PDT715SYV3FS, PDT775SYN5FS, PDT775SYN7FS, ZDT925SPN8SS

Fitment reminder: Match the complete appliance model number, including suffix or revision where applicable, before ordering.