Dishwasher displays a temperature sensor error; cycles may stop mid-wash or not heat properly; water may stay cold.

Safety First: Disconnect power at the breaker before accessing internal components.

Access and inspect thermistor:

• The thermistor (temperature sensor) is typically mounted in the sump area near the circulation pump.
• Remove the lower access panel and, if needed, pull the dishwasher out slightly to access the sump.
• Locate the small sensor with two wires; inspect the connector for corrosion or loose fit. Reseat the connector.

Basic checks:

• Visually inspect the harness from the thermistor to the main control for cuts, pinches, or burn marks.
• If you have a multimeter and are qualified to use it, disconnect the sensor and measure resistance; compare to KitchenAid specs (typically around 48kΩ at 77°F, but verify for your model).
• If the sensor is open (infinite resistance) or shorted (near 0Ω), replace it.

If sensor and wiring are good:

• The main control board may not be reading the sensor correctly and may need replacement.