Whirlpool F3E0 Error: Oven Temperature Sensor (RTD) Open Circuit
Fix Whirlpool oven error code F3E0 (temperature sensor open).
The electronic oven control (EOC) detects an open circuit (resistance exceeding 2,500 Ω) on the oven temperature sensor (RTD) circuit.
Probable Causes
Failed platinum RTD temperature sensor probe located in upper rear oven cavity.
Broken wire or loose molex pin in oven wiring harness behind rear cabinet insulation.
Electronic Oven Control (EOC) board analog measurement circuit failure.
Diagnostic & Testing Steps
- •Oven display beeps continuously and flashes F3E0.
- •Bake and broil functions refuse to start or immediately abort.
- •Oven cooling fan runs continuously in error lockout mode.
Tools & Equipment Required
- ✓Digital Multimeter (Resistance Mode)Measure oven RTD temperature sensor probe resistance (nominal: 1080 - 1100 Ω at 20°C/70°F).
- ✓1/4-inch Hex Nut Driver & Phillips #2Unfasten sensor mounting screws from inside oven cavity or rear access panel.
- ✓Needle-Nose PliersCarefully pull sensor quick-disconnect wiring harness through the back wall hole.
- ✓Small Inspection FlashlightVerify sensor probe tip is straight, clean of burnt grease, and not touching oven walls.
Fast Reset Sequence: Whirlpool Control Diagnostic Reset Sequence
Before unmounting panels or beginning diagnostic procedures, attempt this manufacturer reset to clear transient microcomputer lockouts:
- 1.Press Cancel / Drain twice to terminate the locked cycle.
- 2.Disconnect wall power plug or switch off the dedicated breaker for 5 full minutes.
- 3.For electronic diagnostic test mode: with door latched, press any 3 consecutive keys (1-2-3, 1-2-3, 1-2-3) in sequence under 1 second apart.
- 1
Step 1: Access Rear Sensor Probe
[ ] DoneOpen oven door, remove interior racks, and unthread the 2 1/4-inch hex screws securing sensor in upper rear corner.
Verification:Pull sensor gently into cavity until electrical disconnect plug is accessible. - 2
Step 2: Measure RTD Sensor Ohms at 70°F
[ ] DoneUnplug wire connector and test resistance across the 2 sensor spade terminals with digital multimeter.
Verification:Sensor reads between 1,060 Ω and 1,100 Ω at 70°F (room temp); replace if reading shows infinity (OL). - 3
Step 3: Test Harness at Main Control Board
[ ] DoneIf sensor tests 1,080 Ω, measure same circuit at EOC control board connector on rear of oven.
Verification:Harness wires show < 0.5 Ω resistance from sensor plug to control board terminal.
Repair Solutions
Remove 2 mounting screws holding RTD sensor inside oven cavity and pull forward.
Measure resistance across sensor terminals: standard specification is 1,080 Ω ± 20 Ω at room temperature (70°F / 21°C).
Replace sensor probe if reading indicates infinity (OL) or exceeds 1,200 Ω at room temp.
Frequently Asked Questions
Can running the self-clean cycle cause code F3E0?
Yes. The extreme temperatures (900°F) during self-clean frequently thermal-shock aged RTD sensors or burn wiring connectors.
What is the correct multimeter range for testing oven RTD sensors?
Set your multimeter to the 2kΩ or 20kΩ resistance scale. A healthy RTD sensor reads roughly 1,080 ohms at room temperature.