GE electric (JB, JT, JK, JS, Profile, Cafe) and gas (JGB, JGS, JGRP) ovens lose bake heat for five reasons. The diagnostic cuts in half once we know whether it's electric (element + sensor + relay board) or gas (igniter + sensor + valve).
Reviewed by Mike Larson, Master Appliance Technician · 18+ yrs in-field · Last reviewed
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Quick answer
GE ovens fail to heat in this order: electric — (1) bake element open (visible break or no glow), (2) oven temperature sensor drift (preheats but never reaches setpoint, or F2 / F3 codes), (3) double-pole element relay on board welded or open. Gas — (4) bake igniter weak (glows but doesn't reach pull-in current for the gas valve), (5) gas safety valve coil failed. Most repairs land $245–$485 all-in. Flat $149 trip fee waived on approval. 1-year warranty.
Root causes, ranked by what we find
What it is: Visible break in the element or no glow at all when bake is called. Element tests open on the meter. Common at year 6–12 on heavy-use Profile and Cafe ovens.
Fix: Replace OEM bake element, verify both element terminals secure and 2400–4000 W draw at preheat.
Typical all-in: $285–$385 all-in
What it is: Sensor reads high or low so the board over- or under-shoots setpoint. F2 = sensor open or temp too high. F3 = sensor shorted.
Fix: Replace OEM oven sensor (1080 Ω at 70°F is spec), verify accuracy with thermocouple at 350°F.
Typical all-in: $245–$345 all-in
What it is: Board commands bake but the DPST relay won't close (or won't release, causing runaway). Confirmed by voltage check at element terminals during preheat.
Fix: Replace OEM control board (most GE ovens require board, not separate relay), verify cycling.
Typical all-in: $385–$485 all-in
What it is: Igniter glows but doesn't pull enough current to open the safety valve — oven sits with glowing igniter and never lights. Spec is 3.2–3.6 A on most GE gas ovens.
Fix: Replace OEM bake igniter, verify amperage and reliable ignition over 3 cycles.
Typical all-in: $285–$385 all-in
What it is: Igniter glows full bright at correct amperage but valve never opens. Less common but real.
Fix: Replace OEM safety valve, verify ignition.
Typical all-in: $385–$485 all-in
Diagnostic order
Model prefix JB / JT / JK / JS = electric. JGB / JGS / JGRP = gas. Diagnostic path differs.
F2 = sensor open or temp high. F3 = sensor short. F7 = stuck key. F9 = door latch.
Electric: pull racks, look for visible break or arc burn. Hot spot test: cold bake = open element.
1080 Ω at 70°F room temp on most GE ovens. Off by more than 25 Ω = replace.
Should pull 3.2–3.6 A within 60 seconds. Weaker = replace igniter.
FAQs
On electric, almost always a burned bake element (no glow), a drifted oven sensor (preheats slow / wrong temp), or a welded element relay on the board. On gas, a weak bake igniter that glows but won't pull enough current to open the valve. Repair lands $245–$485 all-in.
F2 = oven sensor open or oven temp too high. F3 = sensor shorted. Both are diagnosed by measuring sensor resistance (spec 1080 Ω at 70°F). Sensor replacement runs $245–$345 all-in.
Classic weak-igniter symptom — the igniter glows but doesn't pull enough current to open the gas safety valve. Spec is 3.2–3.6 A. We amp-clamp on every gas oven no-light call. Replacement $285–$385 all-in.
Yes — full GE oven lineup including JB, JT, JK, JS, Profile, Cafe, and Monogram built-in wall ovens. Built-in installs may add a small trim-removal surcharge depending on cabinetry.
$245–$485 all-in. Bake element $285–$385, oven sensor $245–$345, control board $385–$485, gas igniter $285–$385, gas safety valve $385–$485. The $149 trip fee credits to repair.
Yes — bake and broil elements, oven temperature sensors, igniters, safety valves, door switches, and main control boards for JB, JT, JK, JS, JGB, JGS, Profile, Cafe, and Monogram ovens.
What will this cost?
Trying to decide repair vs. replace? These pages break down real all-in pricing by brand, model class, and failure mode — so you know the number before we knock.
