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Error code reference

GE Range Error Code F5E3

Loss of 120 VAC across L1 to Ground or Q19 circuit error.

GE codesGE range codes

Loss of 120 VAC across L1 to Ground or Q19 circuit error.

First step from the service manual

Check ground or replace control.

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

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What F5E3 means on a GE range

The F5E3 error code on a GE range indicates a loss of 120 VAC measured from L1 to ground, or a fault within the Q19 transistor circuit on the main control board. This code points to a power delivery issue at the control level, specifically involving one leg of the incoming AC supply or the circuitry that monitors or switches that leg. The range requires two 120 VAC legs (L1 and L2) to operate correctly at 240 VAC for high-draw components like bake and broil elements, and a stable L1-to-ground reference is essential for the control board to function and self-monitor properly.

When the control board detects that the expected 120 VAC reference between L1 and ground is absent or out of specification, it triggers the F5E3 fault to prevent unsafe or erratic operation. The Q19 designation refers to a specific transistor on the control board used in switching or sensing circuits. A failure of this component can mimic or coincide with a true power loss, making it important to distinguish between an upstream wiring or supply problem and an internal board component failure.

The primary diagnostic approach is to verify that proper grounding exists at the range's terminal block and that L1 is delivering the correct voltage to ground. Loose connections at the terminal block, a damaged or open ground wire, a tripped breaker affecting only one leg, or a wiring fault in the supply cord can all produce this condition. If power and grounding check out correctly, the control board itself is the likely cause and will need replacement.

Source: manufacturer service documentation.

Common causes of F5E3

  1. 01

    Faulty or loose ground connection

    Wiring / connection

    A loose, corroded, or disconnected ground wire at the terminal block or junction box can cause the control board to lose its expected L1-to-ground voltage reference. Inspect the terminal block connections and the ground wire path back to the home's electrical panel.

  2. 02

    Single leg power loss at the breaker

    Wiring / connection

    A partially tripped double-pole breaker can cut power to only one 120 VAC leg, causing the control to detect an L1 loss. Reset or test the breaker and confirm both legs are delivering 120 VAC to ground at the terminal block.

  3. 03

    Damaged or open supply cord

    Part replacement

    A cut, burned, or internally broken wire in the range's power cord can interrupt L1 continuity or the ground path. Inspect the cord for visible damage and test each conductor for continuity.

  4. 04

    Failed Q19 transistor or control board fault

    Part replacement

    If all incoming power and ground connections test correctly, the Q19 transistor or associated circuitry on the main control board has likely failed internally. In this case, the control board must be replaced to resolve the fault.

  5. 05

    Loose or corroded terminal block connections

    Wiring / connection

    The terminal block where the supply cord connects to the range can develop loose screws or corrosion over time, creating high resistance or an open circuit on the L1 or ground terminal. Tighten all terminal screws and inspect for discoloration or burning.

See the test procedure for each cause

Frequently asked questions about F5E3

What does F5E3 mean on a GE range?
F5E3 indicates that the control board has detected a loss of 120 VAC between L1 and ground, or a failure in the Q19 transistor circuit on the control board itself. The range monitors this voltage reference to ensure safe and proper operation. The fault can originate from a grounding problem in the home's wiring, a supply cord issue, or an internal control board failure.
Is it safe to use my GE range while the F5E3 code is displayed?
No, you should not operate the range while this error is active. An F5E3 code points to a potential power supply or grounding fault, which can create a shock hazard or lead to unpredictable operation of heating elements. Disconnect power to the range at the breaker until the issue is properly diagnosed and repaired.
Will resetting the GE range clear the F5E3 error code?
A reset by cutting power at the breaker for a few minutes may temporarily clear the code, but the fault will return if the underlying cause has not been fixed. If the ground connection is faulty or the control board's Q19 circuit has failed, the error will come back as soon as the range attempts normal operation. A reset is useful for confirming the fault is persistent, but it is not a repair.
How do I fix an F5E3 error on a GE range?
Start by checking the ground wire and all connections at the range's terminal block for looseness, corrosion, or damage. Next, test both legs of the incoming supply at the terminal block with a multimeter to confirm 120 VAC from each hot leg to ground. If the power supply and grounding are correct, the main control board will need to be replaced due to a failed Q19 circuit.
How much does it cost to repair an F5E3 error on a GE range?
If the fix involves tightening connections or replacing a supply cord, costs are relatively low, typically in the range of $20 to $80 for parts and minimal labor. If the main control board needs replacement, parts alone can range from $150 to $350 or more depending on the specific model, with professional labor adding additional cost. Getting an accurate estimate requires identifying the root cause first.

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