Kenmore Dishwasher Error Code F3E3

F3E3 means the Optical Water Indicator (OWI) sensor failed its calibration routine. The OWI uses a lens and light transmission to monitor water clarity during a wash cycle. When the control board cannot get a valid baseline reading from the sensor, it stores the F3E3 code. The most common cause is a dirty or damaged lens on the OWI sensor.

A simple power reset is unlikely to permanently clear F3E3 because the error reflects an actual calibration failure in the OWI sensor. The code will typically return when the dishwasher attempts another calibration sequence. The underlying cause, either a dirty lens or a failed sensor, must be addressed first, and then a diagnostics cycle should be run to complete a successful calibration.

If the fix is simply cleaning the OWI lens, there is no parts cost involved. If the OWI sensor needs replacement, the part typically costs in the range of $20 to $60 depending on the specific model. Adding professional labor for diagnosis and installation can bring the total repair cost to roughly $100 to $200, though costs vary by region and service provider.

Start by unplugging the dishwasher or disconnecting power, then locate the OWI sensor and inspect its lens for deposits, grease film, or scratches. If the lens is dirty, clean it carefully and reinstall the sensor. If the lens is scratched or the sensor still fails after cleaning, replace the OWI unit and run a full diagnostics cycle to force the control board to recalibrate.

The F3E3 code indicates a sensor failure rather than an electrical or water safety hazard, but running the dishwasher without a functioning OWI means the control board cannot accurately monitor water clarity or soil levels. This can result in poor wash performance or incorrect cycle behavior. It is best to resolve the sensor issue before continued regular use.