Washing machine appliance turbidity detection and evaluation

A method of operating a washing machine appliance, the washing machine appliance comprising a cabinet, a wash tub positioned within the cabinet, a wash basket rotatably mounted within the wash tub and accessible through an opening in the cabinet, a first temperature sensor disposed at the wash tub, a turbidity sensor, a conductivity sensor, and a second temperature sensor disposed in the cabinet, and a controller in signal communication with the first temperature sensor, the turbidity sensor, the conductivity sensor and the second temperature sensor, the method comprising:

• recording, at the controller, a turbidity measurement from the turbidity sensor, a first temperature measurement from the first temperature sensor, and a second temperature measurement from the second temperature sensor;
• comparing, by the controller, the first temperature measurement and the second temperature measurement;
• evaluating, by the controller, the recorded turbidity measurement for accuracy based on the comparison of the first temperature measurement and the second temperature measurement;
• determining an operating parameter of the washing machine appliance based on the evaluated accuracy of the turbidity measurement, wherein the operating parameter comprises at least one of an agitation parameter and a water temperature;
• and
• performing an operating cycle of the washing machine appliance, wherein performing the operating cycle comprises at least one of rotating an agitator according to the determined operating parameter and flowing a volume of water into the wash tub at a temperature according to the determined operating parameter.