Maytag Dishwasher Error Code Delay LED + Hi Temp Wash LED

This LED combination indicates that the dishwasher's self-diagnostic system has detected a failure in the turbidity sensor during the Field Service Test. The turbidity sensor monitors wash water clarity to help the dishwasher optimize cycle performance. When this sensor malfunctions or sends an invalid signal, the control system flags it using these two indicator lights. The fault must be confirmed through Field Service Test mode before proceeding with repairs.

Operating the dishwasher with an active turbidity sensor fault is not recommended. The sensor plays a role in how the dishwasher manages the wash cycle, and a failed sensor may cause the appliance to run inefficiently or not complete cycles properly. It is best to address the fault before continuing regular use.

A basic power reset may temporarily clear the fault code, but if the turbidity sensor is genuinely defective or has a wiring issue, the fault will return when the dishwasher runs its next diagnostic or wash cycle. The underlying cause needs to be identified and corrected through the Field Service Test and Manual Function Test procedures for the repair to be permanent.

A knowledgeable DIYer can attempt some steps, such as cleaning debris or mineral buildup off the turbidity sensor lens and inspecting the sensor wiring harness for loose or corroded connections. If the sensor itself has failed, replacing it requires disconnecting the dishwasher from power, accessing the sensor location, and installing a compatible replacement part. Using the Manual Function Test after repair helps confirm the fault has been resolved.

If the sensor lens simply needs cleaning, the repair can be done at little to no cost. A replacement turbidity sensor part typically ranges from around $20 to $60 depending on the specific model. If a service technician is needed for diagnosis and repair, expect total costs to range from $100 to $250 or more depending on your location and labor rates.