GE Dishwasher Error Code AUTO flashes

When AUTO flashes on a GE dishwasher, it indicates a temperature fault where the water temperature did not increase by at least 10°F within a 10-minute period during the cycle. The dishwasher detects this through its thermistor and control board monitoring system. The program will continue to run, but heating performance is below the expected threshold. Components to inspect include the heating element, thermistor, water fill level, circulation pump, and wiring.

The dishwasher will continue to run through its cycle when this fault occurs, so it is not an immediate safety hazard. However, running cycles without adequate water heating means dishes may not be properly sanitized and detergent may not activate fully. It is advisable to diagnose and resolve the fault before relying on the machine for heavily soiled loads or items that require sanitization.

Resetting the dishwasher may temporarily clear the flashing indication, but if the underlying component has failed, the fault will return during the next cycle when the control board again detects insufficient temperature rise. A reset is useful for ruling out a one-time software glitch, but a recurring AUTO flash requires physical diagnosis of the heater, thermistor, water level, pump, and wiring to identify and correct the root cause.

Some causes of this fault are DIY-friendly, such as checking the water fill level, inspecting wiring connections for corrosion, or testing the heating element and thermistor with a multimeter. If the heating element or thermistor has failed, replacing these parts is a moderate-difficulty repair that many experienced DIYers can complete. However, if the circulation pump or main control board needs replacement, the complexity and cost may make professional service a better option.

Repair costs vary depending on which component has failed. A replacement heating element typically runs in the range of $20 to $60 for the part, while a thermistor is generally $10 to $40. Circulation pump replacements can range from $50 to $150 or more for the part alone. If professional labor is required, expect to add $75 to $200 or more depending on your location and the complexity of the repair.