GE Range Oven Not Heating Correctly or Showing Temperature Errors? Sensor Board WS01F08621 – Fix F3/F4 Codes Fast
If your GE range or wall oven is displaying F3 or F4 error codes, running too hot or too cold, or failing to maintain a set temperature, the range sensor board is the most likely failed component. In most GE and Monogram ranges, the sensor board processes the signal from the oven temperature sensor (RTD probe) and communicates it to the control board — when the sensor board fails, the control board receives incorrect or no temperature data, causing erratic heating, error codes, or a complete failure to heat. ⚡ Common failure point on GE Profile, Monogram, and Café series ranges and wall ovens. Part WS01F08621 is the genuine OEM replacement sensor board that restores accurate temperature sensing and eliminates F3/F4 faults immediately.
❓ Is This the Right Part?
This is the correct fix if ALL of the following are true:
- ✔ Range powers on and control panel responds normally
- ✔ Oven temperature sensor (RTD probe) has been tested and reads correct resistance (~1100Ω at room temp)
- ✔ Bake and broil elements are intact and not visibly burned out
- ✔ ONLY problem is F3/F4 error codes, inaccurate oven temperature, or oven won't heat to set temperature
Not sure? Send us your model number — we'll confirm before you order.
🔧 Common Symptoms
- F3 or F4 error code displayed — sensor circuit open or shorted
- Oven runs significantly hotter or cooler than the set temperature
- Oven fails to reach set temperature and shuts off early
- Oven heats erratically — temperature swings widely during a cycle
- Baking results inconsistent — food undercooked or burned despite correct settings
- Error code clears on reset but returns after a short time
✔ If these symptoms match, this is the most likely failed component in the system.
✔ In most cases, replacing the WS01F08621 sensor board restores accurate temperature control and clears error codes immediately.
📦 Part Details
- Part Number: WS01F08621
- Type: Range / Oven Sensor Board (Temperature Sensing Interface Board) — Genuine OEM GE
- Replaces: WB27X28659, 191D7453G004, WB27T11451, WG02F06863, WG02F10785, WS01F09894
- Brands: GE, GE Profile, Monogram, Café
- Appliance Type: Freestanding Range, Slide-In Range, Wall Oven
Before replacing the sensor board, test the oven temperature sensor (RTD probe) with a multimeter — it should read approximately 1,100Ω at room temperature. A failed sensor causes identical F3/F4 symptoms and costs less than $30 to replace. If the sensor tests good and the error persists, the sensor board is the next component to replace. Replacing both together eliminates the most common repeat repair on this platform.
⚙️ Installation
Skill Level: Moderate — 20–35 minutes. Disconnect power before servicing. The sensor board is typically located behind the rear panel of the range or inside the oven control cavity. Remove the mounting screws, photograph all wire harness connector positions, disconnect the harness, and install the new WS01F08621 board in reverse order. Restore power and run a test cycle to confirm temperature accuracy and error code clearance.
✓ Compatible Models
Confirmed compatible with ZTD90DPSN1SS, ZTD90DSSN1SS, C2S900P2M1S1, C2S950P4M1W2, C2S986SEL1SS, JCGS760SEL1SS, JCGS760SEL2SS, JCGS760SEL3SS, JCGS760SEL4SS, JCS830SM1SS, JCS840SM1SS, PCS940SM1SS, PCS980SM1SS, PCGS930SEL1SS, PCGS960SEL1SS, and 150+ additional GE, GE Profile, Monogram, and Café range and wall oven models. Contact us to verify your model number before ordering.
❓ Frequently Asked Questions
What is the difference between the sensor board and the temperature sensor?
The temperature sensor (RTD probe) is the physical probe inside the oven cavity that measures heat. The sensor board is the circuit board that reads the probe's signal and passes it to the main control board. Both must be working correctly for accurate temperature control — test the probe first before replacing the board.
Will replacing this board clear the F3/F4 error code?
Yes, if the sensor board is the root cause. If the error returns after replacement, the oven temperature sensor probe itself may also need replacement. Contact us for diagnostic help.
Does WS01F08621 replace WS01F09894?
Yes — WS01F09894 is listed as a cross-reference for this board. Confirm your model number before ordering to ensure correct fit.
✓ Model-Specific Repair Pages
💡 Pro Tip
F3 and F4 error codes on GE ranges are triggered by an open or shorted temperature sensor circuit — which can be caused by either the RTD probe or the sensor board. The probe costs ~$20–30 and takes 5 minutes to test with a multimeter (should read ~1,100Ω at room temp). If the probe tests good, the sensor board is the culprit. Testing first saves you from ordering the wrong part and eliminates the most common diagnostic mistake on GE oven repairs.
✅Compatibility & Cross Reference
Not sure about your model number? Call 1-877-899-7278 and we’ll help you confirm. All brand names are the property of their respective owners and are used for compatibility reference only.
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