How do I fix GE Oven Temperature Sensor (RTD Probe) Replacement Guide?

Follow the step-by-step diagnosis below. The most likely fix is identified by checking power, sensor resistance, and control-board signals in order — using a multimeter and the part numbers documented in the parts reference table.

Can I keep running the equipment with this fault active?

Generally no. Faults on Appliance units are emitted when a sensor, safety, or control circuit is outside its operating envelope. Running through an active fault risks compressor, heater, or control-board damage. Diagnose and clear the fault first.

What part is most commonly replaced for GE Oven Temperature Sensor (RTD Probe) Replacement Guide?

The most frequently replaced parts for GE Oven Temperature Sensor (RTD Probe) Replacement Guide are listed in the Parts Reference section of this guide with OEM part numbers and typical price ranges. Check the table for direct replacements.

Is GE Oven Temperature Sensor (RTD Probe) Replacement Guide a DIY repair or do I need a technician?

Sensor swaps, fan motor replacements, and condenser cleaning are typical DIY-level repairs. Anything involving refrigerant, gas, or high-voltage (>240V) work requires a licensed technician for both safety and code-compliance reasons.

GE Oven Temperature Sensor (RTD Probe) Replacement Guide

Q: What does GE Oven Temperature Sensor (RTD Probe) Replacement Guide mean?

Oven won't heat, F2 error codes, or wildly incorrect temperature? A failed RTD probe sends bad readings to the control. Replacing the sensor assembly fixes it.

GE Oven Temperature Sensor (RTD Probe) Replacement Guide — What This Part Does

The oven temperature sensor is an RTD (resistance temperature detector) probe mounted inside the oven cavity. The electronic control reads the probe’s resistance to calculate oven temperature and cycle the bake or broil elements on and off. Over time, the RTD can drift out of range, the probe can break, or the wiring can corrode or short to the oven frame. When the control sees an open, shorted, or out-of-spec sensor circuit, it cannot regulate heat reliably and may shut down or display an error code. GE ovens expect a healthy RTD to read around 1100 ohms at room temperature. Readings far outside that range, no continuity at all, or any continuity from either terminal to the oven frame mean the sensor has failed and needs replacement.

Jump to Replacement Steps

Signs It Needs Replacing

F2 or similar error code on the display The control locks out heating because it cannot read a valid sensor signal.
Oven won’t heat or won’t reach set temperature Without a working sensor, the control stops calling for heat or cycles erratically.
Wildly inaccurate bake temperature (50°F or more off) A drifting RTD sends bad resistance values, so the control adds or removes heat at the wrong times.
Oven overheats or burns food If the sensor reads too high, the control thinks the cavity is cooler than it really is and keeps heating.
Sensor reads open or shorted when tested With power off, a multimeter on the sensor terminals shows no continuity, infinite resistance, or continuity to the oven frame.
Sensor resistance far from 1100 ohms at room temperature Values substantially below 1000 ohms or above 1200 ohms indicate the RTD has drifted out of specification.

How to Replace It

Shut off power to the range at the circuit breaker or unplug the cord from the wall outlet.
Remove oven racks, then locate the temperature sensor probe inside the oven cavity (usually on the upper rear wall).
Remove the single screw or bracket holding the sensor probe to the oven wall and gently pull the probe partway out.
Access the rear of the range by removing the back panel or lower service panel to reach the sensor connector plug.
Disconnect the two-wire plug from the sensor harness and fully remove the old sensor assembly.
Test the old sensor with a multimeter on ohms across the two terminals (should read about 1100 ohms at room temperature) and check for continuity from each terminal to the oven frame (should be infinite/no continuity).
Inspect the wiring harness and connector for burnt, pinched, or corroded contacts and repair or replace as needed.
Route the new sensor assembly through the oven wall, secure the probe bracket with the mounting screw, and plug the connector into the rear harness.
Reinstall all access panels and oven racks, restore power at the breaker, and run a test bake cycle to verify accurate temperature control.

The Part You Need

Part	Notes
GE oven temperature sensor assembly (RTD probe with harness and connector)	Amazon \| Common part number WB21X22134 (replaces WB21T10007 and WB21T10017 on many GE, Hotpoint, RCA, and Kenmore models). Find your exact part number on the model and serial plate inside the oven door frame or on the front frame behind the door.

If this part is failing you may also see one of these codes:

When to Call a Pro

If you are uncomfortable working with 240-volt electric range wiring, or if the sensor tests good but error codes persist, call an appliance technician. The problem may be a failed electronic control board, damaged wiring harness behind the control, or a ground fault elsewhere in the oven circuit. A pro can run advanced diagnostics, read real-time resistance values through the control, and safely trace high-voltage circuits to isolate the fault. For gas line, burner, or igniter work, or if you ever smell gas, stop and call a licensed technician.