Maytag Dishwasher Error Code F3-E3

F3-E3 on a Maytag dishwasher means the OWI (Optical Water Indicator) sensor has failed its calibration check. This sensor monitors water clarity to help the dishwasher adjust its wash cycle based on soil levels. The fault is often caused by a dirty sensor lens, loose wiring connections, or a defective sensor. Running service diagnostics and inspecting the sensor lens are the recommended first steps.

The F3-E3 fault relates to the soil sensing system, not a water leak or electrical hazard, so running the dishwasher is generally not a safety risk. However, without a functioning OWI sensor, the dishwasher cannot accurately monitor water clarity and may not clean dishes effectively or may run less efficient cycles. It is best to address the fault before continued regular use.

If the issue is simply a dirty OWI lens or a loose connector, the repair can cost nothing beyond your time. If the OWI sensor itself needs replacement, parts typically range from $20 to $80 depending on the model, with professional labor adding $75 to $200 on top of that. A full service call for diagnosis and repair generally runs between $100 and $300 in total.

In many cases, yes. Start by locating the OWI sensor lens inside the dishwasher tub and cleaning it with a soft cloth to remove any scale, grease, or film buildup. Also check all wiring connectors in the soil sensing circuit and reseat any that are loose. If cleaning and reseating connections does not resolve the fault, the sensor itself may need replacement, which is a more involved repair.

A power reset may temporarily clear the code, but if the underlying cause, such as a dirty lens, loose connection, or failed sensor, is not corrected, the fault will return once the control board attempts calibration again. Resetting without addressing the root cause is not a lasting fix.