GE Dishwasher Error Code AUTO

The AUTO code on a GE dishwasher signals a temperature fault, specifically that the water temperature increased by less than 10°F during a 10-minute period in the cycle. The dishwasher's control board monitors the rate of temperature rise through a thermistor and flags this condition when heating is insufficient. The cycle continues to run, but the water may not reach the temperature needed for effective cleaning and sanitizing. Common causes include a failed heating element, a faulty thermistor, low water level, or a weak circulation pump.

The dishwasher does continue its cycle when the AUTO code appears, so it will not stop mid-wash. However, if the heating element is not functioning, the water will not reach the temperatures needed to sanitize dishes or properly activate dishwasher detergent. Running the appliance repeatedly in this condition means dishes are likely not being cleaned effectively. It is best to diagnose and resolve the fault before relying on the dishwasher for sanitizing purposes.

Repair costs vary depending on which component has failed. A replacement thermistor is typically an inexpensive part, with DIY repair costing between $15 and $50 in parts. A new heating element generally runs in the $30 to $80 range for the part alone. If a circulation pump or main control board needs replacement, combined parts and labor costs can range from $150 to $400 or more depending on your location and the service provider. Diagnosing the specific failed component before ordering parts will help avoid unnecessary expenses.

Some causes of the AUTO code are within reach of a confident DIYer. Checking the water fill level, inspecting wiring connectors for corrosion, and testing the thermistor and heating element with a multimeter are all feasible without specialized tools. Replacing the heating element or thermistor typically requires disconnecting power, removing the lower spray arm and tub components, and working with electrical connectors. If the main control board is suspected, professional diagnosis is recommended to avoid unnecessary parts costs.

A reset may temporarily clear the displayed code, but it will not resolve the underlying hardware fault causing the temperature rise to fall short of the 10°F-in-10-minute threshold. If the heating element, thermistor, or another component in the heating circuit is defective, the code will return in the next cycle. A reset can be useful as a first step to rule out a one-time control glitch, but a recurring AUTO code requires component-level diagnosis.