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Error code reference

GE Dishwasher Error Code F158

Overvoltage condition detected by the control.

GE codesGE dishwasher codes

Overvoltage condition detected by the control.

First step from the service manual

Check incoming power supply for correct voltage levels.

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

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What F158 means on a GE dishwasher

The F158 error code on a GE dishwasher indicates that the main control board has detected an overvoltage condition in the incoming power supply. The control module continuously monitors the voltage level supplied to the appliance, and when that voltage exceeds the acceptable operating threshold, the board triggers this fault code and may shut down operation to protect internal components. This is a protective feature designed to prevent damage to sensitive electronics and motor-driven components within the dishwasher.

The most common source of this fault is an irregularity in the household electrical supply rather than a failed dishwasher component. Voltage spikes, fluctuations from the utility grid, or issues with the home's breaker panel can all push supply voltage beyond acceptable limits. A dedicated 120V circuit is required for most GE dishwashers, and any deviation upward from the rated voltage can trigger this code. Wiring issues at the outlet or junction box, including loose neutral connections, can also create voltage irregularities that the control interprets as an overvoltage event.

Diagnosis should begin at the power source. Using a multimeter, measure the voltage at the dishwasher's supply circuit to confirm it falls within the expected range. If the incoming voltage is within spec and the fault persists, the control board itself may be misreading the voltage due to an internal component failure on the board. In that case, the control board is likely the component requiring replacement.

Source: manufacturer service documentation.

Common causes of F158

  1. 01

    High or fluctuating utility supply voltage

    Wiring / connection

    The voltage delivered by the utility company may be running high or experiencing spikes. Measure the voltage at the circuit with a multimeter to confirm whether the supply is consistently above the rated level.

  2. 02

    Loose or faulty neutral connection

    Wiring / connection

    A loose neutral wire at the breaker panel, outlet, or junction box can cause voltage imbalances that register as overvoltage at the appliance control. Inspect and secure all neutral connections on the circuit.

  3. 03

    Voltage spike or power surge event

    Wiring / connection

    A transient voltage spike from a nearby lightning strike, grid switching, or large appliance cycling on the same circuit can trigger this fault. If the error appeared after a storm or sudden power event, a reset may clear it if no damage occurred.

  4. 04

    Faulty control board

    Part replacement

    If the incoming supply voltage tests within normal range but the F158 code persists, the control board's internal voltage monitoring circuit may have failed. This would require replacement of the control board.

  5. 05

    Inadequate or shared circuit wiring

    Wiring / connection

    If the dishwasher shares a circuit with other high-draw appliances or is connected to an undersized or improperly wired circuit, voltage irregularities can occur. The dishwasher should be on a dedicated circuit with properly rated wiring.

See the test procedure for each cause

Frequently asked questions about F158

What does F158 mean on a GE dishwasher?
F158 indicates that the dishwasher's control board has detected an overvoltage condition in the incoming power supply. The control monitors supply voltage continuously and triggers this fault when voltage rises above the acceptable operating threshold. The dishwasher may stop running to protect its internal components. The first step is to measure the voltage at the supply circuit using a multimeter.
Can I fix F158 on my GE dishwasher myself?
If the cause is a transient voltage spike, resetting the dishwasher by cutting power at the breaker for a few minutes may clear the code. However, if the issue is related to wiring, a loose neutral, or consistently high utility voltage, those problems require electrical knowledge to safely diagnose and repair. A failing control board would require component replacement, which many experienced DIYers can handle.
Is it safe to use my GE dishwasher when F158 is showing?
It is not recommended to continue operating the dishwasher while this fault is active. The F158 code signals a potentially damaging overvoltage condition, and running the appliance under those circumstances could damage the control board, motor, or other electronics. Address the power supply issue before resuming normal use.
Will resetting the dishwasher clear the F158 error?
A reset by cutting power at the circuit breaker for several minutes may clear the F158 fault if it was caused by a temporary voltage spike. However, if the underlying cause, such as consistently high supply voltage or a wiring defect, has not been corrected, the error is likely to return. Always verify that the supply voltage is within the correct range before assuming the issue is resolved.
How much does it cost to repair a GE dishwasher showing F158?
Repair costs depend on the root cause. If the problem is an electrical issue in the home, such as a loose neutral or circuit wiring problem, an electrician's service call may run anywhere from $75 to $250 or more depending on the complexity. If the control board has failed and needs replacement, parts and labor combined typically range from $150 to $400. In some cases, no parts are needed at all if the fault was caused by a one-time voltage event.

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