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Error code reference

GE Dishwasher Error Code Overfill

Leak detection switch closed or 2nd level pressure switch activated indicating an overfill condition.

GE codesGE dishwasher codes

Leak detection switch closed or 2nd level pressure switch activated indicating an overfill condition.

First step from the service manual

Check fill time setting, water inlet solenoid valve, pressure switch level 2, and under-sump switch.

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

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What Overfill means on a GE dishwasher

The Overfill error on a GE dishwasher indicates that water inside the tub has risen to an unsafe level, triggering either the leak detection switch (under-sump switch) located beneath the tub assembly or the second-level pressure switch mounted in the water supply system. The control board monitors these switches continuously during fill cycles. When either switch closes or activates, the control interprets this as a dangerous overfill condition and halts operation to prevent water damage.

The fill time setting is one of the first factors to evaluate. If the fill time is programmed too long, the inlet valve stays open past the point where the tub reaches its proper water level, allowing excess water to accumulate. The water inlet solenoid valve itself can also cause this condition if it fails to close properly due to debris in the valve seat or a faulty solenoid coil, allowing water to continue entering even when the control board sends a stop signal.

The second-level pressure switch and under-sump switch are the sensing components that directly trigger this error. If the pressure switch is misadjusted, waterlogged, or defective, it may signal an overfill even when water levels are within normal range. Similarly, the under-sump leak detection switch can be tripped by condensation, a legitimate leak from a door gasket or pump seal, or a stuck float. Identifying which switch triggered the fault is critical to narrowing down the correct repair.

Source: manufacturer service documentation.

Common causes of Overfill

  1. 01

    Faulty water inlet solenoid valve

    Part replacement

    A water inlet valve that fails to close completely allows water to keep entering the tub past the correct fill level. Inspect the valve for debris in the seat or a failed solenoid coil that prevents full closure.

  2. 02

    Incorrect fill time setting

    Wiring / connection

    If the fill time parameter is set too high, the control board keeps the inlet valve open too long, overfilling the tub during normal cycles. Review and adjust the fill time setting in the control board configuration.

  3. 03

    Defective or misadjusted second-level pressure switch

    Part replacement

    The second-level pressure switch may activate prematurely due to being out of calibration, waterlogged, or internally failed. This causes the control to declare an overfill condition even if the actual water level is normal.

  4. 04

    Tripped or stuck under-sump leak detection switch

    Wiring / connection

    The under-sump switch sits below the tub and closes when water reaches it from a leak or condensation buildup. Check the sump area for standing water, and verify the switch float or actuator is not stuck in the closed position.

  5. 05

    Leaking door gasket or pump seal

    Part replacement

    A cracked or worn door gasket or a failing pump seal can allow water to escape into the base of the dishwasher, triggering the under-sump leak detection switch. Inspect the gasket perimeter and pump area for signs of moisture or mineral deposits.

See the test procedure for each cause

Frequently asked questions about Overfill

What does Overfill mean on a GE dishwasher?
The Overfill error means the dishwasher detected that water reached an unsafe level inside the tub or leaked into the base of the unit. This is indicated by the second-level pressure switch activating or the under-sump leak detection switch closing. The dishwasher shuts down automatically to prevent water damage to your home. The underlying cause can range from a stuck inlet valve to an actual water leak beneath the tub.
Can I fix the Overfill error myself on a GE dishwasher?
Some causes are DIY-friendly, such as adjusting the fill time setting or clearing debris from around the under-sump switch. However, replacing the water inlet solenoid valve or the second-level pressure switch requires comfort working with water supply connections and basic electrical testing. If you find standing water in the base of the dishwasher, dry it out completely before attempting any diagnostics.
Is it safe to keep using my GE dishwasher when the Overfill error appears?
No, you should not continue running the dishwasher until the cause is identified. The Overfill condition indicates either an uncontrolled fill or an active water leak, both of which can cause significant water damage to cabinetry and flooring. The dishwasher's automatic shutoff is a safety feature, and bypassing it without resolving the root cause is not recommended.
Will resetting my GE dishwasher clear the Overfill error?
Resetting the dishwasher may temporarily clear the error code, but if the underlying issue is not corrected, the fault will return as soon as the problematic component is active again during the next cycle. A reset is useful for confirming whether the fault is intermittent or persistent, but it is not a repair. Address the inlet valve, pressure switch, or under-sump switch before relying on a reset.
How much does it cost to repair a GE dishwasher showing an Overfill error?
Repair costs vary depending on which component is at fault. A water inlet solenoid valve typically costs between $25 and $75 for the part, while a pressure switch can range from $20 to $60. If professional labor is needed, expect to add $100 to $200 for a service visit depending on your area. If the cause is simply a fill time adjustment or a stuck switch float with no parts needed, the cost can be minimal.

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