Whirlpool Dishwasher Error Code 3-1
In short
Thermistor / OWI sensor open circuit
Common causes
- 1Open connector or wire in the temperature-sensing circuit
- 2Open or faulty thermistor / OWI sensor (the OWI has the thermistor built in)

Step-by-step troubleshooting
- 1
Disconnect power and reseat the thermistor / OWI sensor connector
- 2
Have the temperature-sensing circuit checked for an open wire or a failed sensor
You might also notice
- Sanitized light blinks at the end of the cycle
- Incomplete sanitization message
Parts & difficulty
Repair difficulty
Moderate — some experience neededRather have a pro handle it?
A vetted local technician can come out and diagnose your Whirlpool dishwasher at home.
Common questions
What does Whirlpool error code 3-1 mean?
Whirlpool error code 3-1 indicates: Thermistor / OWI sensor open circuit. This is a medium-severity issue affecting your dishwasher.
How do I fix Whirlpool error code 3-1?
(1) Disconnect power and reseat the thermistor / OWI sensor connector (2) Have the temperature-sensing circuit checked for an open wire or a failed sensor This repair typically requires professional tools and expertise.
How do I know if my dishwasher has error 3-1?
Besides the error code on the display, common signs include: Sanitized light blinks at the end of the cycle; Incomplete sanitization message. If you notice any of these symptoms, check your dishwasher's display panel for error code 3-1.
How much does it cost to fix Whirlpool 3-1?
The cost depends on which part caused 3-1, and that is confirmed at the diagnostic visit. EasyBear: A technician arrives, inspects your appliance, and diagnoses the problem at no charge. If you decline the repair, you pay nothing — not even for the visit. Call (415) 795-7300 to book.
Related Whirlpool dishwasher error codes
Book a free diagnostic
Enter your ZIP code and appliance — we’ll take you straight to open times.