Error code reference

Maytag Dishwasher Error Code F9

Thermistor fault

Thermistor fault - a bad temperature sensor reading has occurred.

First step from the service manual

Check connections to Wash Process Sensor from control board. Check for properly operating Wash Process Sensor. Check control board.

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
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F9 on my Maytag Dishwasher

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Thermistor fault - a bad temperature sensor

From Tech Sheet W16260674, p.46:

1.Check connections to Wash Process Sensor from control board. Check for properly operating Wash Process Sensor. Check control board.

2.Disconnect the sensor and measure resistance at the sensor body. Expected: 10 kΩ to 12 kΩ at 77°F (25°C).

3.Check the sensor harness for opens and shorts. Back-probe the sensor pins at the control board connector; a reading outside 5 kΩ to 50 kΩ indicates a failed sensor.

Part WP8577274

Temperature thermistor

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First step from the service manual

Get the full diagnostic procedure for F9.

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