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Error code reference

GE Dishwasher Error Code Turbidity Temp Sensor

Turbidity temperature sensor thermistor is shorted, open, or reading constant.

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Turbidity temperature sensor thermistor is shorted, open, or reading constant.

First step from the service manual

Check turbidity temperature sensor thermistor and wiring.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What Turbidity Temp Sensor means on a GE dishwasher

The Turbidity Temp Sensor error on a GE dishwasher indicates a fault with the turbidity temperature sensor thermistor, a component that monitors both water clarity and water temperature during the wash cycle. This thermistor is part of the turbidity sensor assembly, which the control board uses to determine how dirty the water is and how hot it needs to be to clean effectively. When the control board detects that the thermistor's resistance reading is shorted, open, or stuck at a constant value rather than changing in response to temperature variations, it flags this error to prevent improper wash performance.

A shorted thermistor means its resistance has dropped to near zero, while an open thermistor means the circuit has been broken and no resistance reading reaches the control board. A constant reading means the thermistor is present and connected but fails to respond to temperature changes, often due to internal component degradation. Each of these failure modes causes the control board to lose accurate feedback about wash water conditions.

Diagnosing this error begins with inspecting the turbidity temperature sensor thermistor itself along with all associated wiring and connectors. Technicians should look for corroded terminals, pinched or burned wires, and loose connector seats. If the wiring checks out, the thermistor's resistance should be measured and compared against the expected values for the current water temperature. A reading that does not change with temperature or falls outside the specified range confirms a failed sensor that requires replacement.

Source: manufacturer service documentation.

Common causes of Turbidity Temp Sensor

  1. 01

    Failed turbidity temperature sensor thermistor

    Part replacement

    The thermistor itself has degraded internally and is either shorted, open, or no longer changes resistance with temperature. Measuring the thermistor's resistance and checking for a response to temperature changes will confirm this failure.

  2. 02

    Corroded or loose wiring connector

    Wiring / connection

    Moisture inside the dishwasher can corrode the connector pins at the turbidity sensor, causing an intermittent or open circuit. Inspect the connector for green or white oxidation and check that the connector seats firmly.

  3. 03

    Damaged wiring harness

    Part replacement

    The wires running from the turbidity sensor to the control board can be pinched, chafed, or burned, creating an open or short in the circuit. A visual inspection along the full length of the harness can identify damaged insulation or broken conductors.

  4. 04

    Water or debris contamination on the sensor

    Wiring / connection

    Heavy mineral buildup or debris coating the sensor body can interfere with its readings, causing the control board to see a constant or out-of-range value. Cleaning the sensor surface and rerunning diagnostics may resolve this without replacing parts.

  5. 05

    Control board communication fault

    Part replacement

    If the sensor and wiring both test correctly, the control board itself may have a fault affecting the input circuit that reads the thermistor signal. This is the least common cause and should only be considered after the sensor and wiring are confirmed good.

See the test procedure for each cause

Frequently asked questions about Turbidity Temp Sensor

What does Turbidity Temp Sensor mean on a GE dishwasher?
This error means the control board has detected that the turbidity temperature sensor thermistor is shorted, open, or returning a constant reading that does not change with temperature. The turbidity sensor monitors water clarity and temperature to help the dishwasher adjust its wash cycle. When the thermistor fails in any of these ways, the dishwasher can no longer get accurate feedback from the water and flags the fault. The first step is to inspect the sensor and its wiring for damage or corrosion.
Can I fix the Turbidity Temp Sensor error myself?
A knowledgeable DIYer can perform basic checks such as inspecting the wiring harness and connectors for corrosion, loose connections, or visible damage. Measuring the thermistor's resistance with a multimeter to check for an open or shorted circuit is also within reach for someone comfortable with appliance diagnostics. If the sensor itself has failed, replacing the turbidity sensor assembly is a straightforward repair on most GE dishwasher models. However, if the control board is suspected, professional diagnosis is recommended.
Will resetting the dishwasher clear the Turbidity Temp Sensor error?
A reset may temporarily clear the error code from the display, but it will return as soon as the control board runs through its diagnostics and detects the same fault condition. The underlying problem with the thermistor or its wiring must be identified and corrected for the code to stay clear. Repeatedly resetting without addressing the root cause will not restore proper dishwasher operation.
Is it safe to run my GE dishwasher with a Turbidity Temp Sensor error?
Running the dishwasher with this error active is generally not recommended. Without accurate temperature and turbidity feedback, the control board cannot properly regulate the wash cycle, which may result in poorly cleaned dishes or incorrect water temperatures. In some cases the dishwasher may refuse to complete a cycle. Addressing the fault before continued use is the safer approach.
How much does it cost to repair the Turbidity Temp Sensor error on a GE dishwasher?
If the issue is only a corroded connector or damaged wire, repair costs may be minimal, covering just the technician's time or a small wiring repair kit. Replacing the turbidity sensor assembly typically puts parts costs in the range of $30 to $80 depending on the model, with professional labor adding $75 to $150 or more depending on your location. If the control board turns out to be the cause, costs increase significantly, often ranging from $150 to $350 or more for parts and labor.

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