mypros+
Error code reference

GE Dishwasher Error Code Start LED

Communications failure

GE codesGE dishwasher codes

Communications failure - User Interface control is unable to communicate with the machine control.

First step from the service manual

Check connections between UI board and main control board, replace UI board if necessary.

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

MyPros+ Max

Get the full diagnostic procedure for Start LED.

  • 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
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What Start LED means on a GE dishwasher

The Start LED error on a GE dishwasher indicates a communications failure between the user interface (UI) control board and the machine control board. These two boards exchange data continuously during operation. When the machine control stops receiving valid signals from the UI board, or vice versa, the dishwasher flags this condition by illuminating the Start LED. This typically points to a wiring harness issue, a failed connection at one of the board connectors, or a defective UI board.

For homeowners, this means the control panel and the main brain of the dishwasher are no longer talking to each other. The UI board is the panel you touch to select cycles and press Start. The machine control board sits inside the dishwasher and actually runs the motor, pump, and valves. When they lose communication, the dishwasher cannot operate safely or correctly, so it stops and alerts you with the Start LED indicator.

Before replacing any parts, check that all wire harness connectors between the two boards are fully seated and undamaged. Corrosion, a loose connector pin, or a pinched wire can interrupt the signal. If the connections look good, the UI board is the most likely failed component and should be replaced first.

Source: manufacturer service documentation.

Common causes of Start LED

  1. 01

    Loose or disconnected wiring harness between UI and machine control boards

    Wiring / connection

    The ribbon or wire harness connecting the UI board to the machine control board can loosen over time from vibration or during prior service. A loose connector interrupts the data signal and immediately triggers the communications failure.

  2. 02

    Corroded or damaged connector pins on the harness

    Part replacement

    Moisture inside the door panel can corrode the connector pins on either end of the harness, creating high resistance or an open circuit in the communication line. Corroded pins may need the harness replaced to restore a clean connection.

  3. 03

    Failed user interface (UI) control board

    Part replacement

    The UI board itself can fail due to a power surge, moisture intrusion, or component wear. A failed UI board cannot transmit or receive communication signals, triggering this error even when all wiring is intact.

  4. 04

    Failed machine control board

    Part replacement

    Less commonly, the machine control board loses the ability to communicate on its end of the connection. If replacing the UI board and verifying all wiring does not resolve the error, the machine control board is the next suspect.

See the test procedure for each cause

Frequently asked questions about Start LED

What does the Start LED error mean on a GE dishwasher?
The Start LED error indicates a communications failure between the user interface control board and the machine control board. The two boards are not exchanging data as expected, so the dishwasher cannot operate. This is most often caused by a loose wire harness connection or a failed UI board.
How do I fix the Start LED error on a GE dishwasher?
Start by unplugging the dishwasher and inspecting the wiring harness connectors between the UI board (inside the door panel) and the machine control board. Reseat any loose connectors and look for corroded or bent pins. If the connections are secure and clean, the UI board is the most likely cause and should be replaced. If a new UI board does not clear the error, the machine control board may need replacement.
Can I still use my GE dishwasher when the Start LED error is active?
No. When the Start LED communications failure is present, the dishwasher cannot complete a cycle because the UI board and machine control board are not communicating. Attempting to run the unit in this state will not produce results and will not cause additional damage, but the dishwasher will not function until the underlying issue is resolved.
How much does it cost to fix the Start LED error on a GE dishwasher?
If the fix is simply reseating a loose connector, there is no parts cost. A replacement UI board for a GE dishwasher typically costs between $80 and $200 depending on the model. A machine control board runs $100 to $300. If you hire a technician, add $100 to $200 for labor. DIY replacement of the UI board is manageable for most homeowners since it involves removing the inner door panel and swapping the board.
Will resetting my GE dishwasher clear the Start LED error?
A reset may temporarily clear the error, but if there is a physical wiring or board problem, the Start LED will return once the dishwasher tries to communicate again. To reset, disconnect power for 60 seconds and restore it. If the error comes back immediately or on the next cycle, move on to inspecting the harness connectors and testing the UI board.

Related GE dishwasher codes

All GE dishwasher codes
View all 222 GE dishwasher codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass