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Error code reference

GE Dishwasher Error Code AUTO flashes

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 flashes means on a GE dishwasher

The AUTO flashing error on a GE dishwasher indicates a temperature fault condition where the wash water temperature failed to rise by at least 10°F within a 10-minute window. This signals that the heating system is not performing adequately during the cycle. Unlike a hard fault that halts the machine, this error allows the program to continue running, but the wash quality may be compromised because proper sanitization and detergent activation depend on reaching target temperatures.

The heating circuit in GE dishwashers involves several interdependent components: the heating element itself, the thermistor that monitors water temperature, the circulation pump that moves heated water throughout the tub, the water fill level, and the main control board that interprets sensor data and drives the heater. A failure or degraded performance in any one of these components can cause the water temperature to stagnate, triggering the AUTO flash code. For example, a failed heating element will produce no heat at all, while a faulty thermistor may report incorrect temperatures even if the element is functioning normally.

Water level also plays a critical role. If the tub is not filled to the correct level, the heater may be partially or fully exposed, causing it to cycle off on its thermal limiter or simply heat insufficient water volume. A weak or failing circulation pump reduces water movement across the heating element, slowing heat transfer into the wash water. Wiring faults, including corroded terminals or broken connections between the control board and the heater or thermistor, can also interrupt the heating circuit and produce this fault.

Source: manufacturer service documentation.

Common causes of AUTO flashes

  1. 01

    Failed heating element

    Part replacement

    The heating element is the most direct cause of insufficient temperature rise. A burned-out or open-circuit element produces no heat, and this can often be confirmed with a continuity test using a multimeter.

  2. 02

    Faulty thermistor

    Part replacement

    The thermistor monitors water temperature and reports readings to the control board. If it is out of calibration or has failed, the board may incorrectly determine that heating is insufficient even when the element is working.

  3. 03

    Low or incorrect water fill level

    Wiring / connection

    If the dishwasher is not filling with enough water, the heater may overheat and trip its limiter, or there may simply be too little water volume to show a measurable temperature increase. Check the float switch and water inlet valve for proper operation.

  4. 04

    Weak or failing circulation pump

    Part replacement

    The circulation pump moves water across the heating element during the wash cycle. A pump running at reduced capacity limits heat transfer to the water, slowing the overall temperature rise and triggering this fault.

  5. 05

    Wiring or main control board fault

    Wiring / connection

    Corroded terminals, broken wires, or a malfunctioning control board can interrupt power delivery to the heater or misread thermistor signals. Inspect wiring harness connections at the heater, thermistor, and control board for damage or corrosion.

See the test procedure for each cause

Frequently asked questions about AUTO flashes

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

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