GE Oven Not Heating? Diagnose and Fix (Electric & Gas)

Common Symptoms

• Oven does not heat when set to Bake — element or igniter not activating
• Oven takes far longer than normal to preheat and never reaches set temperature
• Broil works but Bake does not, or vice versa
• Gas oven igniter glows orange but the burner never lights after 90+ seconds
• Food consistently undercooked despite correct temperature setting
• F2, F3, F4, F7, or F8 error code on the display
• Bake element shows visible burn hole or blistering (electric models)

Most Likely Causes

1. 1

   Bake Element Failure (Electric — #1 Cause on Electric Models)

   On GE electric ovens (JB735SPSS, JB645RKSS, PB935YPFS), the bake element WB44X200 is the #1 cause of no-heat failures. It is a 2,500–3,000W 240V coil that visibly fails — look for a break, blister, or burn hole along the coil, most often near the terminal ends where it enters the oven back wall. A failed element reads OL on a multimeter. A healthy GE bake element WB44X200 measures 20–40 ohms between its two terminals. Replacement costs $25–$50 and takes about 15 minutes: two mounting screws, pull toward you, disconnect the spade terminals, install the new element.

2. 2

   Broil Element Failure (Electric Models)

   The GE broil element WB44X5044 is the upper coil inside the oven cavity. A failed broil element kills broil function while bake may still work. It fails the same way as the bake element — visible coil damage or OL on a multimeter. Measure across the terminals with the oven unplugged: 20–40 ohms is healthy, OL means replace. If both bake and broil fail simultaneously on a GE oven, suspect the thermal fuse or the control board rather than two independent element failures.

3. 3

   Igniter Failure (Gas Models — #1 Cause for Gas)

   GE gas ovens (JGS760SPSS, CGS750P2MS1) use hot surface igniter WB13K21 below the oven burner tube. The gas safety valve only opens when the igniter draws 3.2–3.6 amps — this amperage window is specific to GE and slightly different from Maytag/Whirlpool models (2.5–3.3A). An aging igniter glows orange but its resistance has increased and current draw drops below the 3.2A threshold, preventing valve actuation. Glow test: set the oven to Bake at 350°F and observe. The burner should light in under 90 seconds. If the igniter glows for more than 90 seconds without lighting, WB13K21 is weak and must be replaced ($25–$55).

4. 4

   Temperature Sensor Fault — GE Spec: 1,100Ω (WB21X10022)

   GE oven sensor WB21X10022 mounts at the upper-rear corner of the oven cavity. The GE-specific resistance spec is 1,100 ohms at room temperature — not 1,080Ω as on Whirlpool-platform models. Using the Whirlpool spec to test a GE sensor can cause misdiagnosis. F3 error = open sensor circuit (OL on multimeter). F4 error = shorted sensor (near-zero ohms). Both conditions prevent the control board from regulating oven temperature, causing the oven to never reach heat. Sensor WB21X10022 costs $20–$45 and takes about 20 minutes to replace.

5. 5

   Control Board Relay Failure — F2 Fire Hazard (Safety Critical)

   GE error code F2 means the oven temperature has exceeded safe limits, most commonly caused by a stuck relay on the control board keeping a heating element energized continuously. F2 on a GE oven is a fire hazard: the relay can fail in the 'on' position, running the element until a thermal cutout trips or, at worst, causing a fire. If F2 displays, UNPLUG THE OVEN IMMEDIATELY. Do not use the oven until the relay board is inspected and the faulty relay identified or replaced. F7 (stuck key) and F8 (ADC failure) also indicate control board issues but without the fire hazard.

Quick DIY Checks

1. 1Step 1 — Check error codes and safety: Note any code on the display before touching anything. SAFETY CRITICAL: If F2 is displayed, unplug the oven immediately — this code indicates a stuck relay causing runaway temperature and is a documented fire hazard. Do not use the oven until the relay board is inspected. Other codes: F3 = open sensor circuit (test WB21X10022 — should read ~1,100Ω at room temp); F4 = shorted sensor (reads near-zero); F7 = stuck key on keypad; F8 = ADC failure on control board. Unplug the oven for 5 full minutes to clear capacitor charge and attempt a hard reset before further diagnosis.
2. 2Step 2 — Visual inspection of bake element (electric models): Open the oven door and examine the bake element WB44X200 at the bottom of the cavity. Look along the full coil length for any visible break, gap, blister, or burn hole. On JB-series models (JB735SPSS, JB645RKSS), failures typically appear near the terminal ends where the element enters the oven back wall. Also check the back wall openings for arc marks or discoloration. Visible damage confirms element failure — no multimeter test needed to proceed with replacement.
3. 3Step 3 — Multimeter test on bake element: Unplug the oven from the wall outlet. Remove the two element mounting screws at the oven back wall. Pull the element gently toward you to expose the flat spade connectors behind the back wall. Disconnect both connectors. Set multimeter to ohms. Touch probes to both element terminals. Healthy GE bake element WB44X200: 20–40 ohms. OL = burned out, replace. Below 5 ohms = shorted, also replace.

Repair vs Replace

Recommended Tools & Parts

• GE Oven Bake Element — WB44X200

  Replacement lower bake element for GE electric ovens including JB735SPSS and JB645RKSS. Tests at 20–40 ohms when functional. Mounts with 2 screws to oven back wall, connects via flat spade terminals. Visually inspect first — breaks, blisters, or burn holes confirm failure before ordering.

  $25–$50

  Buy on Amazon →

• GE Oven Broil Element — WB44X5044

  Replacement upper broil element for GE electric ovens. Tests at 20–40 ohms when functional. Fixes no-heat on broil function while bake still works. Confirm compatibility with your full GE model number.

  $25–$55

  Buy on Amazon →

• GE Gas Oven Igniter — WB13K21

  Hot surface igniter for GE gas ranges including JGS760SPSS and CGS750P2MS1. Must draw 3.2–3.6A to open the gas safety valve. Replaces igniters that glow orange but fail to light the burner within 90 seconds. Accessed by removing the oven bottom panel.

  $25–$55

  Buy on Amazon →

• GE Oven Temperature Sensor — WB21X10022

  NTC thermistor temperature probe for GE ovens. GE spec: approximately 1,100 ohms at room temperature (note: different from 1,080Ω Whirlpool-platform spec). Covers F3 (open) and F4 (short) error codes. Mounts at upper-rear corner of oven cavity with 2 screws.

  $20–$45

  Buy on Amazon →

• Digital Multimeter

  Required for testing bake element resistance (20–40Ω), broil element (20–40Ω), temperature sensor (1,100Ω GE spec), igniter resistance, and thermal fuse continuity. Any meter in the $15–$40 range handles all GE oven diagnostics.

  $15–$40

  Buy on Amazon →

Links are Amazon affiliate links (tag: fixitfastai-20). Prices are estimates.

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