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Error code reference

GE Dishwasher Error Code F80

Absent water flow (turbidity based)

GE codesGE dishwasher codes

Absent water flow (turbidity based) - water flow not detected in unit.

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What F80 means on a GE dishwasher

The F80 error code on a GE dishwasher indicates that the control system has failed to detect water flow through the unit. This detection is turbidity-based, meaning the dishwasher relies on a turbidity sensor to monitor water conditions and confirm that water is actually moving through the wash system. When the control board expects to see evidence of water circulation but the turbidity sensor reports no change consistent with active water flow, the F80 code is triggered and the cycle is interrupted.

The turbidity sensor works by measuring the optical clarity or particulate content of the water. During normal operation, water movement causes detectable changes in the sensor's readings, confirming circulation is occurring. If the sensor detects no change over a defined period, the control interprets this as an absence of water flow. Root causes can include a failed turbidity sensor, a blocked or restricted water inlet, a faulty water inlet valve that is not opening fully, or a failed wash pump motor that is not circulating water through the system even if water is present in the tub.

Additional causes include a kinked or blocked drain line creating backpressure, low household water pressure preventing adequate fill, or debris clogging the inlet screen on the water valve. Wiring faults between the turbidity sensor and the control board can also produce this code by preventing accurate sensor readings from reaching the controller. A thorough diagnosis should evaluate both the water delivery path and the sensor circuit before replacing any components.

Source: manufacturer service documentation.

Common causes of F80

  1. 01

    Faulty or dirty turbidity sensor

    Part replacement

    The turbidity sensor may be coated with mineral deposits or grease, or it may have failed electrically, causing it to report no water flow even when water is present. Inspect the sensor for buildup and check its wiring connector for corrosion or loose contact.

  2. 02

    Clogged or failed water inlet valve

    Part replacement

    The water inlet valve may be blocked by debris on its inlet screen or may have failed electrically and is not opening to allow water into the tub. Check the screen for sediment buildup and test the valve coil for continuity.

  3. 03

    Low household water pressure

    Wiring / connection

    Insufficient water pressure at the supply line can prevent the dishwasher from filling adequately, resulting in no detectable water flow. Verify that the shutoff valve under the sink is fully open and that household pressure meets the dishwasher's minimum requirement.

  4. 04

    Failed wash pump motor

    Part replacement

    If water enters the tub but the wash pump motor is not running, the turbidity sensor will not detect circulation and the F80 code will trigger. Listen for the motor during the wash cycle and test the motor circuit if no operation is heard.

  5. 05

    Wiring fault between sensor and control board

    Wiring / connection

    A damaged wire, loose connector, or corroded terminal in the circuit between the turbidity sensor and the main control board can cause inaccurate or absent sensor signals, triggering a false F80 code. Inspect the wiring harness along the full path from the sensor to the board.

See the test procedure for each cause

Frequently asked questions about F80

What does F80 mean on a GE dishwasher?
The F80 code on a GE dishwasher means the unit did not detect water flow during the cycle, based on readings from the turbidity sensor. The control board expects to see evidence of water movement and stops the cycle when none is confirmed. This can point to problems with the water supply, the inlet valve, the wash pump, or the turbidity sensor itself.
Can I fix an F80 error on my GE dishwasher myself?
Some causes of F80 are DIY-friendly, such as checking that the water supply valve is fully open, cleaning debris from the inlet valve screen, or inspecting wiring connectors for looseness. Replacing components like the turbidity sensor, inlet valve, or wash pump motor requires comfort with appliance disassembly and basic electrical testing. If you are not confident working with water supply lines or electrical components, a qualified technician is the safer option.
Will resetting my GE dishwasher clear the F80 error code?
A reset may temporarily clear the F80 code, but it will return if the underlying problem is not corrected. To reset, you can power the dishwasher off at the circuit breaker for one to two minutes and then restore power. If the code reappears when you run a cycle, diagnosis and repair of the root cause are necessary before the dishwasher will operate normally.
Is it safe to use my GE dishwasher when it shows an F80 error?
Running the dishwasher while the F80 code is active is not recommended. If the wash pump is running without adequate water circulation, internal components could be damaged from running dry or from overheating. It is best to stop using the appliance and diagnose the cause before attempting another cycle.
How much does it cost to repair an F80 error on a GE dishwasher?
Repair costs depend on which component has failed. A turbidity sensor replacement typically falls in the range of $40 to $100 for the part. A water inlet valve generally costs $25 to $80 for the part, while a wash pump motor can range from $80 to $200 or more. Adding professional labor, total repair costs commonly range from $150 to $350 depending on the failed component and your location.

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