KitchenAid Dishwasher Error Code Water Temp >85C LED

This error means the dishwasher's temperature sensor has detected water exceeding 85°C (185°F), which is above the safe operating limit. The control board triggers this fault to protect internal components, dishware, and seals from heat damage. It can be caused by overly hot inlet water, a continuously running heater element, a faulty sensor, or wiring problems in the sensor circuit.

No, you should not continue running the dishwasher while this fault is active. Water at or above 85°C (185°F) can damage the door gasket, plastic tub components, dish racks, and dishware. The machine should remain out of service until the root cause is identified and corrected.

Repair costs vary depending on the cause. If the fix is simply adjusting the home water heater setting, there is no parts cost. Replacing a temperature sensor typically runs in the range of $20 to $60 for the part, while a control board replacement can range from $100 to $250 or more for the part alone. Adding professional labor will increase the total, generally ranging from $100 to $200 depending on the technician and region.

Start by checking and lowering your home water heater setting to approximately 120°F (49°C), as excessively hot supply water is a common and easily corrected cause. If the supply temperature is acceptable, inspect the temperature sensor and its wiring harness for moisture, corrosion, or damage. If those components appear intact, the heater element circuit and control board relay should be tested to confirm the element is not staying on continuously.

A reset may temporarily clear the fault display, but the error will return if the underlying condition is not resolved. If the water heater is set too high, the heater relay has failed, or the sensor is defective, those issues must be corrected before the machine will operate normally. Resetting without fixing the cause can lead to repeated faults and potential component damage.