F3
GE Café
Temperature Sensor / Thermistor Error
Dishwasher displays F3; unit may not heat or may terminate cycles prematurely.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Open or shorted thermistor in sump, Damaged sensor wiring harness, Faulty main control board interpreting sensor signal incorrectly
How to Fix / Troubleshooting
Safety first: Disconnect power at the breaker before accessing the sump or wiring.
- Locate thermistor: Remove the lower rack and filters. The thermistor is typically mounted in the sump wall or base on GE Café models.
- Inspect wiring: From underneath, locate the thermistor connector and harness. Check for pinched, cut, or corroded wires. Repair as needed.
- Test thermistor: Disconnect the sensor and measure resistance at room temperature. Compare to GE specifications. If reading is open, shorted, or far out of range, replace the thermistor.
- Control board check: If a new thermistor does not clear F3, the main control board may be faulty and should be replaced.
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Repair Difficulty
Medium
3/5
Required Part
GE Café Dishwasher Thermistor
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