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Error code reference

GE Dishwasher Error Code F155

Tactile key stuck.

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Tactile key stuck.

First step from the service manual

Check button operation, each button should click. Check for plastic flash. Replace User Interface board.

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

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What F155 means on a GE dishwasher

The F155 error code on a GE dishwasher indicates that one or more tactile keys on the control panel are registering as continuously pressed, a condition known as a stuck key. The User Interface (UI) board monitors each button's input signal and expects it to return to its resting state after being pressed. When a key remains in the activated position beyond the expected duration, the control board interprets this as a fault and halts normal operation to prevent unintended commands from executing.

The most common physical cause is a button that is mechanically obstructed or physically deformed. Each tactile key should produce an audible and tactile click when pressed and immediately release. If a button feels mushy, fails to click, or does not spring back, it may be physically stuck due to debris, food residue, or a manufacturing defect called plastic flash. Plastic flash refers to thin excess plastic material left over from the injection molding process that can bridge a button's travel gap and prevent full release.

If physical inspection of each button reveals normal click action with no visible obstruction or flash, the fault likely lies within the User Interface board itself. Internal solder joints, membrane contacts, or onboard components can fail and cause a key input line to read as permanently closed. In this case, replacing the UI board is the correct repair path. Always inspect buttons manually before condemning the board, as a simple obstruction is a faster and less costly fix.

Source: manufacturer service documentation.

Common causes of F155

  1. 01

    Debris or residue jamming a button

    Wiring / connection

    Food particles, grease, or cleaning product buildup can work their way around a button and prevent it from springing back after being pressed. Inspect each button closely and clean around the edges of the keypad.

  2. 02

    Plastic flash on a control panel button

    Wiring / connection

    Excess plastic material from the molding process can obstruct a button's travel, preventing it from releasing properly. Visually inspect each key for thin plastic ridges or burrs along the button edges.

  3. 03

    Physically damaged or stuck button

    Part replacement

    A button that has been pressed too forcefully or damaged by impact may no longer click and release correctly. Press each button individually and confirm it produces a distinct click and returns to its resting position.

  4. 04

    Failed User Interface board

    Part replacement

    If all buttons click properly and no physical obstruction is found, the UI board itself may have a failed membrane contact or internal component that is holding a key input line in the active state. Replacement of the UI board is required to resolve this.

See the test procedure for each cause

Frequently asked questions about F155

What does F155 mean on a GE dishwasher?
F155 indicates that the dishwasher's control system has detected a stuck tactile key on the User Interface panel. One or more buttons is registering as continuously pressed rather than returning to its resting state. The cause can be physical, such as debris or plastic flash blocking the button, or electrical, such as a fault on the UI board itself.
Can I fix the F155 error myself without replacing parts?
Yes, in many cases. Start by pressing each button on the control panel and confirming that every one produces a clear click and springs back. Look closely around the edges of each key for debris, food residue, or thin plastic flash that could be blocking button travel. Cleaning around the buttons or carefully removing any plastic obstruction may clear the fault without any parts replacement.
Will resetting the dishwasher clear the F155 code?
A reset may temporarily clear the code, but if the underlying cause is not addressed, the fault will return. If a button is physically stuck or the UI board has failed, the dishwasher will detect the condition again on the next power cycle. Address the root cause before relying on a reset as a solution.
Is it safe to keep using my dishwasher with an F155 error?
The dishwasher will typically stop normal operation when this code is active, which limits the risk of unintended behavior. However, it is best not to attempt to force the appliance to run while a control fault is present. Address the stuck key issue before resuming use to avoid any further complications with the control board.
How much does it cost to fix a GE dishwasher F155 error?
If the fix is simply cleaning debris or removing plastic flash from a button, there is no parts cost involved. If the User Interface board needs to be replaced, parts and labor costs typically range from $150 to $350 depending on the specific model and service rates in your area. Diagnosing the physical buttons first is always recommended before committing to a board replacement.

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