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Error code reference

GE Dishwasher Error Code AUTO

Temperature fault

GE codesGE dishwasher codes

Temperature fault — temperature increase less than 10°F in 10 minutes; program continues.

First step from the service manual

Check heater, thermistor, water level, circulation pump, main control & wiring.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
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What AUTO means on a GE dishwasher

The AUTO error code on a GE dishwasher indicates a temperature fault condition in which the water temperature failed to rise by at least 10°F within a 10-minute window during the wash or rinse cycle. The dishwasher's control board continuously monitors water temperature through a thermistor and expects to see a steady rise as the heating element brings the water up to the target temperature. When that minimum rate of increase is not detected, the control logs the AUTO fault. Notably, the program continues running rather than stopping completely, which means dishes may finish a cycle but without adequate heat for proper cleaning and sanitizing.

The heating circuit is the most direct suspect when this code appears. A failed heating element will produce no heat at all, making the 10°F-in-10-minutes threshold impossible to meet. A faulty or drifted thermistor can send inaccurate temperature readings to the control board, causing the board to incorrectly calculate the rate of rise even if the element is working normally. Low water level is another contributing factor because a partially filled tub means the element may be exposed rather than submerged, reducing its efficiency and potentially triggering thermal cutout protection.

The circulation pump also plays a role, since adequate water movement is needed to distribute heat evenly and allow the thermistor to get an accurate reading of the bulk water temperature. A weak or failing pump may leave the thermistor in a cooler pocket of water. Finally, wiring harness issues such as corroded terminals or broken conductors between the control board, heating element, and thermistor can interrupt either power delivery to the element or the temperature signal returning to the board.

Source: manufacturer service documentation.

Common causes of AUTO

  1. 01

    Failed heating element

    Part replacement

    A burned-out or open-circuit heating element cannot raise water temperature at all, making it impossible to achieve the required 10°F rise in 10 minutes. You can test the element for continuity with a multimeter; a reading of no continuity confirms failure.

  2. 02

    Faulty thermistor

    Part replacement

    A thermistor that has drifted out of its calibrated resistance range sends incorrect temperature data to the control board, which may cause a false temperature fault even when the element is functioning. Check the thermistor's resistance value against specifications and replace it if the reading is out of range.

  3. 03

    Low water level in the tub

    Wiring / connection

    If the dishwasher is not filling to the correct level, the heating element may not be fully submerged, reducing heating efficiency and potentially triggering the fault. Inspect the float switch, inlet valve, and water supply pressure to confirm the tub is filling adequately.

  4. 04

    Weak or failing circulation pump

    Part replacement

    The circulation pump keeps water moving across the thermistor and heating element. A pump that is not moving sufficient water volume can create temperature stratification in the tub, causing the thermistor to report a slow or stalled temperature rise. Listen for unusual noise from the pump and check for reduced spray arm pressure.

  5. 05

    Wiring or control board fault

    Wiring / connection

    Corroded terminals, loose connectors, or a damaged wiring harness between the control board, heating element, and thermistor can interrupt power to the element or corrupt the temperature signal. Inspect all connectors in the heating circuit for corrosion and secure fit before suspecting the main control board itself.

See the test procedure for each cause

Frequently asked questions about AUTO

What does AUTO mean on a GE dishwasher?
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.
Can I fix the AUTO error code on my GE dishwasher myself?
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.
Is it safe to keep using my GE dishwasher when the AUTO code appears?
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.
Will resetting my GE dishwasher clear the AUTO error code?
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.
How much does it cost to repair a GE dishwasher AUTO error code?
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.

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