Whirlpool Dishwasher Error Code 12-3

12-3Whirlpool Dishwasher

What this code means

No link between ECM and Internet - the dishwasher is not receiving signal from the wireless router.

First step from the service manual

Press the Smart Grid button. If an error tone sounds, check that the router is on and connected to the Internet.

Next steps: diagnose the root cause

1
Verify the error code is active

Power cycle the unit and see if the code returns. If it does, the fault is persistent and requires diagnosis.

2
Get the full diagnostic procedure

Get step-by-step guidance, test values, and wiring diagrams from the OEM service manual.

Start diagnosing 12-3 on your Whirlpool dishwasher

$29/month · Cancel anytime · Or $9.95 3-day pass

What’s available for Whirlpool dishwasher models

Access Whirlpool dishwasher service manuals, wiring schematics, exploded parts views, and error code references on MyPros+.

Related Whirlpool dishwasher error codes

1-1Stuck key detected in keypad or keypad connection (Start/Resume or Cancel key...1-2Stuck key or short circuit(s) detected in keypad or keypad connection. Control...1-3Control detected stuck key(s) in keypad or keypad connection.10-1Dispenser electrical problem; loose connection in Dispenser Circuit and/or open...10-2Vent wax motor electrical problem - loose connection in vent circuit and/or...10-3Drying fan error (on models with fan) - loose connection in Fan circuit and/or...12-1No communication between ECM and Appliance Control Unit (ACU) - loose...12-2No link between ECM and wireless router - dishwasher is not linked to the...
STOP GUESSING·Start verifying

Start diagnosing faster today.

$29/month · Cancel anytime · Or $9.95 3-day pass

Get Started