Maytag Dishwasher Error Code 3-3

The 3-3 code indicates a failure in the OWI (Optical Water Indicator) circuit, which is the sensor responsible for measuring how dirty the wash water is during a cycle. The fault can be triggered by a contaminated lens, a wiring connection problem, a failed calibration, or a defective sensor. The dishwasher flags this code because it cannot reliably adjust wash performance without accurate soil data. Cleaning the OWI lens and checking the wiring connections are the recommended first steps.

The 3-3 error is not a safety hazard in the way that a water leak or electrical fault would be. However, with the OWI sensor not functioning correctly, the dishwasher cannot optimize its wash and rinse cycles based on actual water clarity. This can result in less effective cleaning or inefficient water use. It is best to address the fault before continuing regular use.

If the fix is as simple as cleaning the OWI lens, there is no parts cost involved. Replacing the OWI sensor typically falls in the range of $30 to $80 for the part, depending on the model, with additional labor costs if a technician performs the work. A control board replacement is more expensive, generally ranging from $100 to $250 or more for the part alone. Getting a professional diagnosis before ordering parts can help avoid unnecessary expense.

In many cases, yes. Start by cleaning the OWI lens surface to remove any grease or mineral buildup, and check that all connectors in the soil sensing circuit are firmly seated and free of corrosion. If the dishwasher has a Service Diagnostics mode, running it with clear water in the tub will confirm whether the sensor is working. If the sensor reads correctly after cleaning, no parts may be needed, but a failed OWI sensor or control board will require replacement.

A simple power reset may temporarily clear the code, but it will return if the underlying cause is not resolved. The OWI requires a successful calibration cycle to confirm the sensor is working correctly, and this only occurs after Service Diagnostics has been run following any repair. Clearing the code without fixing the root cause will not restore proper soil sensing operation.