F4
Amana
Oven Temperature Sensor Circuit Shorted
Oven may shut off or not heat correctly, display shows F4 intermittently or shortly after starting.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Shorted oven temperature sensor, Sensor wiring harness shorted to chassis, Moisture or grease contamination in sensor connector, Failed sensor input circuit on control board
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before servicing.
- Inspect sensor and wiring:
- Locate the oven sensor probe in the oven cavity.
- Remove mounting screws and gently pull the sensor out.
- Check the wiring for melted insulation or contact with metal chassis.
- Test sensor resistance: With the sensor disconnected, measure resistance at room temperature. If reading is very low (near 0 Ω) or far below 1000 Ω, the sensor is shorted and must be replaced.
- Check for shorts to ground: With a multimeter, check each sensor lead to chassis ground. There should be no continuity. If there is, repair or replace the harness.
- Control board: If sensor and harness test good, the electronic control board may have an internal short and should be replaced.
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Repair Difficulty
Medium
3/5
Required Part
Oven Temperature Sensor
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