i10Frigidaire Dishwasher — Frigidaire Dishwasher i10 Error Code

The i10 code indicates the water temperature sensor (NTC thermistor) in the sump has failed or is reading outside its valid range. This sensor monitors wash water temperature and reports it to the control board so it can activate and deactivate the heating element correctly. When i10 appears, the dishwasher either cannot verify the water temperature at all, or is receiving an implausible reading. The dishwasher may stop mid-cycle as a safety measure to avoid overheating.

Locate the NTC temperature sensor in the sump at the bottom of the tub — it is a small two-wire probe. Disconnect the sensor and test resistance with a multimeter. At room temperature a healthy sensor typically reads 4,000–12,000 ohms depending on model specifications. An open circuit (OL) or near-zero reading confirms failure. Also inspect the sensor wiring harness connector for corrosion or loose pins before ordering the part.