⚠️ Safety Warning: Appliance repair involves electricity, gas, and moving parts. Always disconnect power before working on any appliance.
Error Code: Dishwasher Difficulty: Moderate
Problem: Flash code 4: Temperature sensor fault; thermistor open/shorted (non-display models)
How to Fix Dishwasher Error
- Unplug dishwasher and allow components to reach room temperature.
- Remove lower access panel to access temperature sensor on heater housing.
- Disconnect wiring harness from thermistor.
- Measure resistance across sensor terminals with multimeter. Expected: ~10kΩ at 77°F.
- If reading is infinite (open), near zero (shorted), or significantly off: remove mounting screw.
- Gently extract thermistor from mounting well. Clean well with isopropyl alcohol.
- Apply thermal conductive paste to tip of new sensor.
- Install replacement thermistor using OEM part DD31-00003A. Secure mounting screw to 4 in-lbs torque.
- Reconnect wiring harness firmly. Reinstall access panel.
- Restore power. Run cycle to verify temperature display updates accurately and error clears.
Recommended Replacement Part
Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.
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Expert: Mike Sullivan
EPA Section 608 Certified Technician with 18+ years experience.
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