Whirlpool Dishwasher Error Code 1-2

1-2Whirlpool Dishwasher

What this code means

Control Software Issue - All LEDs are on due to damaged or corrupted memory on control board or incompatible software components. Possible causes: Damaged control board memory; Corrupted control board software; Incompatible software components

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.

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