Kenmore Dishwasher Error Code 4-1

The 4-1 error code means the control board cannot determine the position of the diverter, which is the motorized valve that routes water to the upper and lower spray arms. The fault is triggered when the diverter sensor circuit fails to provide a readable position signal. This can be caused by wiring issues, a failed sensor, a stuck diverter motor, or a faulty control board.

Operating the dishwasher with an active 4-1 fault is not recommended. If the diverter cannot be confirmed to be in the correct position, water may not reach one or both spray arm levels, resulting in poor cleaning performance. In some cases, the control will prevent normal cycle completion until the fault is resolved.

A reset may temporarily clear the 4-1 code, but it will return as soon as the control attempts to operate the diverter and again cannot confirm its position. Resetting without addressing the underlying wiring or component failure is not a permanent solution. The fault must be diagnosed and the defective component repaired or replaced to clear the code reliably.

A knowledgeable DIYer can address this fault by inspecting and reseating all wiring connectors at the diverter motor and sensor, which is often enough to resolve the issue if a loose connection is the cause. Running the Service Diagnostic cycle will confirm whether the diverter moves as expected. If the diverter assembly or control board needs replacement, those repairs are more involved but achievable with basic appliance repair experience and the correct parts.

Repair costs depend on what component has failed. A diverter assembly replacement typically falls in the range of $50 to $150 for the part, while a control board can range from $80 to $250 or more depending on the model. Adding professional labor will increase the total, generally bringing the repair to somewhere between $150 and $400 depending on the diagnosis.