Error code reference

Whirlpool Dishwasher Error Code U1

Machine failed to prime with water within a given time, usually because the tap has not been turned on.

SourceWhirlpool DishDrawer - Service Manual: DD603/DS603Service Persons Guide to Fault Codes

Whirlpool codes Whirlpool dishwasher codes

Diagnostic procedure

The full U1 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview

First diagnostic step

Check if the tap is turned on.

SourceWhirlpool DishDrawer - Service Manual: DD603/DS603Service Persons Guide to Fault Codes

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More steps, wiring diagram references, and verified part numbers

Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.

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Where this code is documented

1 manual in the MyPros+ library documents this code for Whirlpool dishwasher.

Models covered by the manuals that document this code

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The full U1 procedure

Where this code is documented

Models covered by the manuals that document this code

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