Jenn-Air Dishwasher Error Code 3-3

Code 3-3 means the control board detected a failure or failed calibration in the OWI (Optical Water Indicator), also called the optical soil sensor. This sensor monitors water turbidity to automatically adjust wash cycles. The error appears when the sensor cannot communicate valid data to the control board, either due to a dirty or damaged lens, a wiring fault, or a failed sensor.

In many cases the dishwasher will still run cycles with code 3-3 active, but the auto-sensing soil detection feature will not function correctly, meaning the machine cannot automatically adjust cycle length based on water dirtiness. Continuing to use it is not a safety hazard, but wash performance may be inconsistent. Addressing the OWI issue promptly prevents longer-term wear from improperly timed cycles.

Yes. After installing a new OWI sensor, you need to run a Diagnostics Cycle, which signals the dishwasher's control board to force calibration during the next regular wash cycle. Skipping this step can leave the sensor in an uncalibrated state, which may cause code 3-3 to reappear even with a functioning new part.

Start by unplugging the dishwasher, then locate and remove the OWI sensor and inspect its lens. Clean any grease, mineral buildup, or debris off the lens surface using a soft cloth. If the lens is scratched or cleaning does not clear the code, replace the OWI. After reinstalling or replacing the sensor, check all wiring connections in the Soil Sensing Circuit with a meter for continuity, then run a Diagnostics Cycle to force calibration on the next regular wash.

If the fix is simply cleaning the OWI lens, there is no parts cost. A replacement OWI sensor typically costs between $20 and $60 for the part depending on the specific model. If you hire a technician, expect a service call fee plus labor, which can bring the total to $100-$200. This is a repair many homeowners can complete themselves after unplugging the appliance, since it involves removing the sensor, inspecting connections, and running a Diagnostics Cycle.