Error code reference

Whirlpool Dishwasher Error Code 9-4

Lower spray arm error - mechanical binding or blocking of spray arm, corroded or loose connection in spray arm sensor or motor circuit, open fuse on control, spray arm drive circuit on control, or spray arm motor/sensor failure.

SourceWhirlpool Dishwasher - Tech Sheet: KDTE334DSS Diagnosticsp. 9

Diagnostic procedure

The full 9-4 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
1
First diagnostic step
Check for and remove any blockage of lower spray arm. Run the Service Diagnostic cycle and check for LSA operation/fault detection.

SourceWhirlpool Dishwasher - Tech Sheet: KDTE334DSS Diagnosticsp. 9

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

10 manuals in the MyPros+ library document this code for Whirlpool dishwasher.

Models covered by the manuals that document this code

More models are covered than are listed here.

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