Error code reference

Whirlpool Dishwasher Error Code F0

Soil detection sensor defective

Whirlpool codes Whirlpool dishwasher codes

Soil detection sensor defective - no or bad output from sensor, optical part defective, sensor very dirty, or connection between sensor and control board (CB) interrupted.

First step from the service manual

Check sensor optical lens cleanliness, verify connection between sensor and control board (CB).

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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Step-by-step tests with expected resistance, voltage, and continuity values
Wiring diagram references and connector pinouts from the OEM service manual
Verified part numbers when replacement is required

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F0 on my Whirlpool WDT730PAHZ

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Soil detection sensor defective - no or bad

From Tech Sheet W12673778, p.30:

1.Check sensor optical lens cleanliness, verify connection between sensor and control board (CB).

2.Measure control board supply voltage at the test points. Expected: 12 VDC and 5 VDC; a drop below 4.75 VDC on the logic rail points to a failed onboard regulator.

3.Inspect all connectors on the main control for corrosion, thermal stress, or backed-out pins. Reseat each connector with the power disconnected.

Part WPW10804018

Electronic control board

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First step from the service manual

Get the full diagnostic procedure for F0.

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