⚠️ Safety Warning: Appliance repair involves electricity, gas, and moving parts. Always disconnect power before working on any appliance.
Error Code: Dishwasher Difficulty: Moderate
Problem: Inlet water temperature sensor fault; thermistor open, shorted, or out of operational range
How to Fix Dishwasher Error
- Unplug dishwasher from electrical power or switch off dedicated circuit breaker.
- Remove lower access panel beneath dishwasher door using Phillips screwdriver.
- Locate inlet water thermistor (mounted on water inlet valve assembly near sump). Disconnect wiring harness.
- Measure resistance across thermistor terminals with multimeter set to resistance mode at room temperature (77°F/25°C). Expected value: 10kΩ ±10%. Infinite resistance = open circuit; near zero = shorted.
- Remove mounting screw securing sensor. Gently extract thermistor from housing.
- Clean mounting well thoroughly with isopropyl alcohol and lint-free cloth.
- Apply thin layer of thermal conductive paste to sensing tip of new sensor.
- Install replacement thermistor using OEM part DD31-00003A. Secure mounting screw to 4 in-lbs torque.
- Reconnect wiring harness until audible click. Reinstall access panel.
- Restore power. Run diagnostic cycle (press Temp+Delay Start+Power) to verify error cleared and temperature readings stabilize.
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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