Amana Dishwasher Error Code 3-3

Error code 3-3 means the control board has detected a failure in the OWI, or Optical Soil Sensor, circuit. The OWI is responsible for reading how dirty the wash water is so the dishwasher can adjust its cycle accordingly. When the control cannot get a valid reading from the sensor, it stops normal operation and displays this code. The cause can range from a dirty lens to a failed sensor or a wiring problem.

Running the dishwasher while the 3-3 code is active is not recommended as the appliance cannot accurately monitor soil levels, which means it may not clean dishes adequately or may run cycles that are too short or inefficient. The dishwasher may also interrupt mid-cycle depending on how the control board responds to the fault. Address the OWI issue before resuming regular use to ensure proper operation.

Yes, calibration is required after installing a new OWI sensor. Run Service Diagnostics immediately after the replacement, which triggers the dishwasher to perform calibration on the next regular wash cycle. Skipping this step can result in inaccurate soil readings even with a functional new sensor. The calibration cycle uses clean water as a baseline, so running a normal cycle with water and no dishes immediately after diagnostics is a reliable way to complete the process.

Start by inspecting and cleaning the OWI lens surface, as grease or mineral buildup is a common trigger for this code. Next, check all wiring connections in the soil sensing circuit for looseness or corrosion. Run the Service Diagnostics mode to evaluate whether the OWI is reading correctly with clear water, where it should show a low soil reading. If diagnostics confirm a sensor fault, replace the OWI and run diagnostics again to force calibration before the next regular wash cycle. If the code continues after a new OWI is installed, the control board may need replacement.

If the fix is simply cleaning the OWI lens, the repair costs nothing. A replacement OWI sensor typically runs between $20 and $60 for the part, and the installation is accessible enough for a confident DIYer since it generally involves disconnecting a wiring harness and unclipping the sensor. If the control board is the culprit, parts can range from $100 to $200 or more, and a technician visit will add labor costs on top of that. Diagnosing the root cause before ordering parts will save money.