Zenith Dishwasher Error Code F10

F10 on a Zenith dishwasher means the turbidity sensor is reporting a high reading, with a possible open circuit on the sensor. The turbidity sensor monitors how dirty the wash water is so the dishwasher can adjust its cycle. When this error appears, the control board has detected that the sensor's output is outside the expected range, indicating either a sensor failure, a wiring problem, or heavy buildup on the sensor itself.

Running the dishwasher with an active F10 error is not recommended. When the turbidity sensor is not functioning correctly, the control board cannot accurately determine water cleanliness, which may result in poor wash performance or incorrect cycle operation. It is best to resolve the fault before continuing regular use.

A reset may temporarily clear the F10 code, but if the underlying fault with the turbidity sensor or its wiring remains, the error will return when the dishwasher runs its next cycle. A reset is useful for confirming whether the fault is intermittent, but it is not a substitute for properly diagnosing and repairing the sensor or its circuit.

Some causes of F10 can be addressed without professional help, such as cleaning debris or limescale from the turbidity sensor lens or reseating a loose wiring connector. However, if the sensor has an open circuit confirmed by a multimeter test, the sensor will need to be replaced, which requires basic disassembly of the sump area. If the control board is suspected, professional diagnosis is recommended.

Repair costs depend on the root cause. If only cleaning the sensor or reconnecting a loose wire is needed, there may be little to no parts cost involved. A replacement turbidity sensor typically costs in the range of $15 to $60 in parts, while a main control board replacement can range from $80 to $200 or more in parts alone. Adding professional labor will increase the total cost.