Kenmore Dishwasher Error Code 3-1 — Thermistor/OWI Sensor Failure
What this means
Error code 3-1 (F3E1) indicates the thermistor or optical water indicator (OWI) sensor has failed or is reading out of range. This sensor monitors water temperature during wash cycles. The dishwasher may not heat water properly or may not run certain cycle phases.
Alternate codes: F3E1
Step-by-step fix
4 stepsPower cycle
Turn off power for 5 minutes and restore.
Inspect wiring
Check the wiring to the thermistor/OWI sensor for damage or loose connections.
Test the sensor
Use a multimeter to test the sensor resistance. Compare to the value in your service manual.
Replace the sensor
If wiring is intact but the sensor reads out of range, replace it.
When to call a professional
If the sensor is difficult to access or wiring needs to be run.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Links may earn us a commission at no extra cost to you. We only recommend parts relevant to this repair.