Error code reference

Whirlpool Dryer Error Code d21

Lower motor sensed running when it should be off; check for line noise or wiring harness problems; cycles disabled on lower dryer until manually cleared.

SourceWhirlpool MLG PD Series Dryer - Service Manual: Microprocessor Programmingp. 7

Whirlpool codes Whirlpool dryer codes

Diagnostic procedure

The full d21 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 for line noise or wiring harness problems.

SourceWhirlpool MLG PD Series Dryer - Service Manual: Microprocessor Programmingp. 7

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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

4 manuals in the MyPros+ library document this code for Whirlpool dryer.

Models covered by the manuals that document this code

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The full d21 procedure

Where this code is documented

Models covered by the manuals that document this code

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