Maytag Dishwasher Error Code Sanitize LED flash

The Sanitize LED flash on a Maytag dishwasher indicates that a thermistor failure was detected during the Field Service Test. The thermistor is the component that measures water temperature, and without a reliable reading, the dishwasher cannot verify that sanitize temperatures were reached. This fault requires diagnostic testing to confirm the cause before parts are replaced.

The dishwasher may still run basic wash cycles, but you should not rely on the sanitize function while this fault is active. Because the thermistor is not providing a trustworthy temperature reading, the appliance cannot confirm that water reached sanitization temperatures. If sanitizing dishes is important for your household, avoid using that cycle until the fault is resolved.

A simple power reset is unlikely to permanently clear this fault because it is triggered by the Field Service Test detecting an out-of-range thermistor reading. The error will typically return once diagnostics run again if the underlying component problem has not been corrected. Proper repair of the thermistor or wiring is required to resolve the fault for good.

Start by running the Field Service Test to confirm the thermistor fault, then use the Manual Function Test to check individual components. Inspect the thermistor's wiring harness and connectors for damage or looseness. If the wiring is intact and connectors are secure, the thermistor itself likely needs to be replaced. If the thermistor tests within spec, the control board may be at fault.

Repair costs depend on which component has failed. A replacement thermistor is typically an inexpensive part, with DIY repair costs generally ranging from $15 to $50 for the part alone. If a technician is needed, labor charges will add to that total. A control board replacement is considerably more expensive, often ranging from $100 to $300 or more including parts and labor.