Kenmore Dishwasher F19 Error — Soil/Turbidity Sensor Fault
The F19 error code signals that the soil sensor (turbidity sensor) has returned an error reading. Kenmore dishwashers use this sensor to automatically adjust water usage and cycle duration based on how dirty the water becomes during washing. When it malfunctions, the dishwasher may run excessively long cycles or stop mid-wash.
Sensor Function and Failure Modes
The turbidity sensor uses an infrared LED and photodetector to measure water clarity. Grease, food particles, or hard water deposits coating the sensor window block the light beam and cause false readings. In cold climates, condensation can also affect sensor performance during startup.
Cleaning the Sensor
- Locate the turbidity sensor in the sump area (usually a black cylindrical component with a wire connector).
- Disconnect the harness and remove the sensor.
- Soak the sensor window in white vinegar for 15 minutes to dissolve mineral deposits.
- Rinse with clean water and reinstall.
Replacement
If cleaning does not clear F19, the sensor has internally failed and must be replaced. Our technicians stock common Kenmore sensor components and typically complete the replacement during the initial service visit.