Whirlpool · Oven
Whirlpool Oven F03 Error Code
Oven temperature sensor shorted
What this error means
F03 means the oven temperature sensor (RTD) resistance is abnormally low—a short circuit in the probe or its wiring. The ERC cannot read cavity temperature and disables bake and broil elements as a safety step.
How F03 is detected
When F03 appears on a Whirlpool oven, the control board has confirmed that water did not leave the machine within the programmed drain window. On Whirlpool WFE505W0BS, Whirlpool WFG505M0BS, and similar variants, the drain pump runs for a fixed interval—often three to seven minutes on washers and dishwashers—while a pressure switch or turbidity sensor verifies the tub or sump is empty. If water remains, the cycle stops to prevent spin with a full tub or overflow on the next fill.
Most F03 calls are resolved without parts: turn off the breaker and access the sensor through the rear wall inside the oven. Restricted drain paths mimic pump failure because the impeller spins against a blocked hose or filter. Document whether the pump hums audibly during the drain step; a humming pump with no water movement points to a clogged filter or kinked hose, while silence may indicate a failed pump motor or loose wiring at the harness.
After clearing blockages, run a short cycle and listen at the drain hose for steady water flow. If F03 returns on the next load with a clean filter and straight hose, measure resistance at the pump motor connector per the service manual for your model before ordering a replacement pump assembly.
Common causes
- Sensor wire insulation melted against the hot oven cavity wall
- Short inside the RTD probe from age and heat cycling
- Moisture in the sensor connector after steam from cooking
- Harness pinched between the oven back panel and cabinet
Step-by-step fixes
- 1Turn off the breaker and access the sensor through the rear wall inside the oven
- 2Disconnect the sensor plug behind the range and measure resistance—expect about 1,080 ohms at 70°F
- 3Readings well below 500 ohms confirm a short—replace the oven temperature sensor
- 4Route the new sensor wire away from hot walls using high-temperature clips
When to call a technician
If a new sensor tests correct but F03 returns, trace the harness for a short inside the cavity insulation.
Affected models
- Whirlpool WFE505W0BS
- Whirlpool WFG505M0BS
- Whirlpool WGE745C0FS
Prevention & maintenance
- Clean drain filters and hose terminations monthly on high-use ovens to prevent F03 from lint and food debris buildup.
- Record when F03 appears in the cycle and whether it clears after a 60-second power reset on your Whirlpool oven—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for F03; Whirlpool uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting F03; reversed plugs on pumps and valves cause immediate repeat faults.