Dishwasher displays C7; cycle may end early or not heat properly.

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

• Locate the thermistor: On GE dishwashers, the thermistor is typically mounted in the sump or side of the tub bottom. Refer to your model's diagram if needed.
• Inspect wiring and connector: Check for corrosion, loose pins, or damaged insulation. Reseat the connector firmly.
• Test thermistor resistance: Disconnect the thermistor and measure resistance with a multimeter at room temperature. Compare to GE specifications (commonly in the 10–50 kΩ range depending on design). If readings are open, shorted, or far out of spec, replace the thermistor.
• Check continuity to control board: If the thermistor tests good, check the harness from the thermistor to the main control board for continuity and shorts.
• Replace control board if necessary: If wiring and thermistor are good but C7 remains, the control board's sensor circuit may be defective.