Whirlpool Dishwasher Error Code F8 E2 — Turbidity/OWI Sensor Failure
What this means
The F8 E2 error code on Whirlpool dishwashers indicates the OWI (Optical Water Indicator) or turbidity sensor has failed. This sensor measures how clear or dirty the wash water is, allowing the dishwasher to adjust cycle time and water usage based on soil levels. When the sensor fails, the dishwasher cannot properly optimize its wash cycles. It may default to maximum cycle times or refuse to proceed past certain wash stages.
Alternate codes: F8E2
Step-by-step fix
4 stepsClean the sensor
Turn off power to the dishwasher. Remove the lower spray arm and filter assembly. Locate the turbidity sensor in the sump area. Clean it thoroughly with a soft cloth and warm water to remove any film or debris.
Grease, food film, or hard water deposits can coat the sensor and give false readings.
Power cycle and test
Restore power and run a diagnostic cycle (consult your model's tech sheet for the diagnostic procedure). Check if the sensor reads within normal parameters during the test.
On many models, entering diagnostic mode involves pressing specific button sequences on the control panel.
Check sensor wiring
With power off, inspect the wiring from the OWI sensor to the main control board. Look for damaged, pinched, or water-damaged wires.
The sensor is in a wet environment — corrosion on wire terminals is common.
Replace the OWI sensor
If cleaning doesn't resolve the error, replace the OWI/turbidity sensor. It's typically held in place by a clip or snap-fit mounting in the sump area.
After replacement, run a full cycle with dishes to verify the sensor properly detects soil levels.
When to call a professional
If the sensor replacement doesn't resolve the error, the main control board's analog input circuit may be damaged, requiring professional diagnosis.
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.
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