KitchenAid Ice Maker Error Code LED flashes 5 times

The 5-flash LED code appears during Clean/Service mode diagnostics and means the control board cannot detect the evaporator thermistor. This sensor monitors the temperature of the evaporator coil and is critical to the freeze and harvest cycle. The fault points to a missing signal caused by a loose connection, damaged wiring, or a failed thermistor. The ice maker will not resume normal ice production until the sensor circuit is restored.

The ice maker will not operate normally with this fault present because the control board relies on the evaporator thermistor to manage the freeze cycle safely. Running the unit without a functioning thermistor could result in incomplete ice formation or improper harvest timing. It is best to diagnose and resolve the fault before returning the unit to regular use.

If the fix is simply reseating a loose connector, there is no parts cost involved. A replacement evaporator thermistor typically costs in the range of $15 to $50 depending on the specific model. If a professional technician is needed, total repair costs including labor generally fall in the range of $100 to $250. A control board replacement, if ultimately required, is a more expensive repair that can range from $150 to $400 or more for parts and labor.

Start by locating the evaporator thermistor connector and reseating it firmly, since a loose connection is the most common cause. If the connector is secure, disconnect the thermistor and test its resistance with a multimeter to determine if the sensor has failed. Also inspect the wiring harness between the thermistor and control board for cuts, cracked insulation, or broken continuity. If the thermistor is faulty, replacing it is typically a straightforward repair.

A reset may temporarily clear the displayed fault, but the 5-flash code will return as soon as the unit enters Clean/Service mode diagnostics again if the underlying problem has not been fixed. The control board actively checks for the evaporator thermistor signal during each diagnostic cycle, so the fault will persist until the connection issue or failed component is actually repaired.