Maytag Dishwasher Error Code Turbidity Sensor failure

This code means the control board detected a fault with the turbidity sensor during the Field Service Test. The turbidity sensor monitors how dirty the wash water is so the dishwasher can adjust the cycle accordingly. When the sensor or its wiring fails, the control board flags the fault and flashes the Delay LED and Hi Temp Wash LED together. Running the Field Service Test confirms the code before any parts are replaced.

The dishwasher may still run cycles, but it cannot accurately measure water soil levels, which means wash performance will be inconsistent and dishes may not come out fully clean. Running the machine long-term with this fault active also risks the control board making poor cycle decisions based on missing sensor data. Addressing the fault promptly is advisable, but there is no immediate safety hazard that would prevent short-term use.

The Field Service Test is accessed through a specific button sequence on the control panel, which varies by model, so check your model's service manual or tech sheet for the exact steps. Once in the test mode, the control will cycle through fault codes and the Turbidity Sensor Failure will be confirmed by the Delay LED and Hi Temp Wash LED flashing together. From there, the Manual Function Test lets you activate individual components to further isolate whether the sensor, wiring, or control board is the source of the fault.

Start by entering the Field Service Test to confirm the fault code, then use the Manual Function Test to check the turbidity sensor and related components individually. First inspect the sensor for debris or mineral buildup and clean it if needed. If cleaning does not resolve it, check the wiring harness for damaged or loose connectors. If the wiring is intact, replacing the turbidity sensor is the most likely fix. Only replace the control board if the sensor and wiring both check out correctly.

A replacement turbidity sensor typically costs between $20 and $60 for the part, and replacing it is a manageable DIY repair for someone comfortable with basic appliance work. If a technician is hired, expect an additional $100 to $150 in labor. If the control board turns out to be the cause, board replacement parts can run $150 to $300 or more, which may shift the cost-benefit calculation toward replacing an older machine.