KitchenAid Dishwasher Error Code 3-3

Error code 3-3 on a KitchenAid dishwasher indicates a failure in the OWI (Optical Water Indicator) soil sensor or its circuit. This sensor uses light to measure how dirty the wash water is and adjusts the cycle accordingly. The fault can be triggered by a dirty sensor lens, a wiring connection problem, or a failed sensor. Running Service Diagnostics is the first step to evaluate whether the sensor is operating correctly.

The 3-3 code indicates the soil sensor is not functioning properly, which means the dishwasher may not be able to optimize its wash cycle based on water turbidity. While this is not typically a safety hazard, the dishwasher may not clean as effectively, and running it repeatedly without addressing the fault can mask other developing issues. It is best to diagnose and resolve the error before continued regular use.

A reset may temporarily clear the 3-3 code, but if the underlying problem with the OWI sensor or its circuit has not been fixed, the fault will return. Cleaning the lens, checking wiring connections, or replacing the sensor are the steps needed to permanently resolve the error. After installing a new OWI, Service Diagnostics must be run to trigger calibration on the next wash cycle.

In many cases, yes. Start by cleaning the OWI lens surface, which can accumulate grease and mineral deposits that interfere with the optical reading. If cleaning does not clear the fault, check all wiring connections in the soil sensing circuit with a meter while the dishwasher is unplugged. If the sensor itself has failed, replacing the OWI and then running Service Diagnostics to force calibration will be necessary.

If the issue is only a dirty OWI lens or a loose connector, the repair may cost nothing beyond your time. If the OWI sensor needs to be replaced, parts typically range from around $30 to $80 depending on the specific model, with professional labor adding $100 to $200 or more depending on your location and the service provider.