GE Washer - E66 Error Code
The washer detected a water temperature sensor failure.
Meaning
The washer detected a water temperature sensor failure.
The GE E66 error code indicates that the washer’s water temperature sensor (NTC) is reporting invalid or out‑of‑range values. This prevents the washer from regulating water temperature.
Symptoms
Causes
Step-by-Step Fixes
- Test the NTC sensor.
- Inspect wiring for damage.
- Replace the sensor if defective.
Safety Notes
- Disconnect power before servicing electronics.
Applicable Models
Show Models
- GE GFW front-load washers
Related Pages
Other GE Washer Error Codes
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- GE Washer E50 Error Code
- GE Washer E52 Error Code
- GE Washer E54 Error Code
- GE Washer E56 Error Code
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- GE Washer E58 Error Code
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- GE Washer FAIL Code
- GE Washer HydroWave 1 Flash — Tub Taking Too Long to Stop
- GE Washer HydroWave 10 Flashes — No Communication With Control Board
- GE Washer HydroWave 2 Flashes — Belt Slipping
- GE Washer HydroWave 3 Flashes — Software Problem
- GE Washer HydroWave 4 Flashes — Mode Shifter Failure
- GE Washer HydroWave 5 Flashes — Motor Problem
- GE Washer HydroWave 6 Flashes — Motor Locked
- GE Washer HydroWave 7 Flashes — Lid Switch Stuck Closed
- GE Washer HydroWave 8 Flashes — Motor Overheated
- GE Washer HydroWave 9 Flashes — Brake Resistor Failed
- GE Washer LED Flash Code 1 — Lid Lock Will Not Unlock
- GE Washer LED Flash Code 2 — Lid Lock Will Not Lock
- GE Washer LED Flash Code 3 — Pressure Sensor Fault
- GE Washer LED Flash Code 4 — Drain Pump Fault
- GE Washer LED Flash Code 5 — Motor Fault
- GE Washer NOC Code
- GE Washer Sd Error Code
- GE Washer SL‑1 Status Light Code — Lid Lock Fault
- GE Washer SL‑10 Status Light Code — Fill Timeout
- GE Washer SL‑2 Status Light Code — Pressure Sensor Fault
- GE Washer SL‑3 Status Light Code — Drain Pump Fault
- GE Washer SL‑4 Status Light Code — Motor Fault
- GE Washer SL‑5 Status Light Code — Shifter Fault
- GE Washer SL‑6 Status Light Code — Suspension or Balance Fault
- GE Washer SL‑7 Status Light Code — Thermistor Fault
- GE Washer SL‑8 Status Light Code — Control Board Fault
- GE Washer SL‑9 Status Light Code — Water Valve Fault
- GE Washer SM‑1 — Enter Service Mode
- GE Washer SM‑2 — Error Code Retrieval
- GE Washer UE Error Code
- GE Washer UL Error Code
- GE Washer UPD Code
- GE Washer W1 Error Code
- GE Washer W2 Error Code
- GE Washer W3 Error Code
- GE Washer W4 Error Code
Model-Specific Notes
E66 often appears when the NTC sensor becomes coated with detergent residue.
Disclaimer
The information provided on this page is for educational and informational purposes only. Repairs involve electrical, mechanical, and water-related risks. Always follow manufacturer instructions and consider contacting a qualified technician for diagnosis or repair.