GE Gas Oven Igniter Glows But Won't Light

Most Likely Cause#

If your GE gas oven igniter glows orange but the gas never flows, the igniter is almost certainly too weak — that single cause accounts for about 85% of these calls. The key is understanding what a GE oven igniter actually does. It isn't a spark; it's a hot-surface igniter wired in series with the gas safety valve, and it has two jobs: glow hot enough to light the gas, and draw enough current to open that valve. A tired igniter can still do the first job while failing the second, so it glows forever with no gas behind it.

Why a Glowing Igniter Still Fails#

The igniter and the safety valve share one circuit: current runs through the igniter, through the valve coil, and back to the board. As the igniter heats, its resistance drops and current rises, and only when that current crosses the valve's threshold — typically 3.2-3.6 amps depending on model — does the valve open and admit gas. An aged igniter's resistance has crept up with every ignition cycle, so it still pulls the 1.5-2.5 amps needed to glow but never reaches the 3.2-3.6 amps needed to open the valve. You get a bright orange element and a cold oven.

Fault Map: Cause by What You See#

The Definitive Test#

Clamp an ammeter around one of the igniter wires, set the oven to Bake, and watch the current as the igniter heats. On a healthy oven it climbs steadily and the gas lights within 30-90 seconds. If the reading plateaus below 3.2 amps after 90 seconds, the igniter is weak — replace it. A time-only check works too: a good GE igniter lights the gas within 30-90 seconds, an igniter that glows two minutes or more without gas is weak, and one that glows five minutes or more has failed outright.

Replacing the Igniter#

GE oven igniters carry specific part numbers — WB13K21 on most JGB and JGBS models, WB2X9154 on older ranges, and WB13K10043 on Profile and Cafe units — and matching the right one to your JGB735, JGBS66, PGS930, or PGB935 avoids a wasted trip. To swap it:

1. Shut off the gas at the range shutoff valve and cut power at the breaker.
2. Remove the oven racks and the oven floor panel (usually two rear screws — the panel slides back and lifts out).
3. Find the igniter beside the burner tube, held by two screws and a wire connector.
4. Disconnect the connector (ceramic wire nuts or a quick-connect), remove the two screws, and lift the old igniter out.
5. Fit the new igniter without touching the silicon carbide element — skin oils create hot spots that shorten its life — then reassemble, restore gas and power, and test.

The element reaches roughly 1,800°F in service and is brittle, so support it by the bracket only.

The Two Less-Common Causes#

Gas safety valve. Rarely, the bimetal valve fatigues and won't open even with a strong igniter. If the ammeter shows a healthy 3.5-plus amps and gas still doesn't flow after 90 seconds, suspect the valve — GE uses WB21X5334 on older ranges and WB36X10001 on newer ones. Never bypass the valve to test for gas; that is genuinely dangerous.

Loose connection. The connector at the igniter — ceramic wire nuts or a plug — can corrode or loosen from years of heat cycling, and a high-resistance joint chokes the current so a perfectly good igniter reads weak. Inspect for corroded nuts, a loose plug, or burned wire ends; sometimes a clean reconnection is the whole fix.

Gas Pressure and Elevation#

One local wrinkle is worth knowing: homes at higher elevation can run slightly lower gas pressure, and a marginally lower supply pressure makes the safety valve need a touch more current to open against it. That compounds a borderline-weak igniter — the same element that would still light at sea level can fall just short here. If your oven sits at elevation and the igniter tests near the edge of spec rather than clearly failed, replace it anyway; the margin it needs to open the valve reliably is smaller than the margin it has left, and a marginal igniter only gets worse.

Cost, Safety, and Repair-or-Replace#

The igniter is the overwhelmingly likely and the cheapest fix, and on any oven worth keeping it's well worth doing rather than replacing the range. The safety valve costs more and needs gas-line work; a bad connection is nearly free. One safety note: if you ever smell gas building up while the igniter glows without lighting, shut the oven off immediately — the valve should not be leaking, and if it is, that needs a professional. After any igniter job, check every gas connection with soapy water for bubbles. If the fault is the valve, or you smell gas, book a same-day visit and we'll bring the GE igniters and valves.