Maytag Dishwasher Error Code Clean + Keypad 4 LED

This code means the dishwasher detected a shorted thermistor during its Automatic Function Test. The thermistor is the water temperature sensor, and its resistance should measure 10K ohms at 77 degrees Fahrenheit. A short drives that resistance far below the normal range, triggering the fault. The problem can be in the thermistor itself or in the wiring between the sensor and the control board.

Running the dishwasher with an active thermistor short is not recommended. Without reliable temperature sensing, the control board cannot properly regulate water heating, which can result in inadequate sanitization or overheating conditions. It is best to resolve the fault before resuming normal use.

A reset may temporarily clear the code, but the error will return as soon as the Automatic Function Test runs again if the underlying fault is still present. Because the code is triggered by a measured resistance value that falls outside the acceptable range, the only way to permanently clear it is to correct the shorted thermistor or wiring condition.

A knowledgeable DIYer can diagnose and often repair this fault with a basic multimeter. Start by checking the thermistor resistance at the sensor connector and then inspect the Orange and Red wires running to connector J5 on the control board. Replacing a thermistor is a straightforward repair, while tracing a wiring short requires more patience but is manageable without professional help.

If the thermistor is the failed component, parts typically cost between $15 and $50 depending on the specific model, making it one of the more affordable dishwasher repairs. If the control board is at fault, parts alone can range from $100 to $250 or more. Adding professional labor generally brings total repair costs to between $100 and $350 depending on what component needs replacement.