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Kenmore Microwave F4 Error Code — Cavity Temperature Sensor Fault

Kenmore Microwave Error Code Reference

F4

Kenmore Microwave F4 Error Code — Cavity Temperature Sensor Fault

Kenmore Microwave

Medium Severity
Warning: If your Kenmore appliance displays the F4 error code and you are unsure how to proceed, turn off the appliance and contact a qualified technician. Some errors require professional repair to avoid further damage or safety risks.

The F4 error code on a Kenmore microwave indicates a fault with the cavity temperature sensor (thermal sensor). The microwave cannot accurately monitor interior temperature for sensor-cook functions.

Causes

  • Failed cavity temperature sensor
  • Sensor wire pinched or damaged during installation
  • Control board fault causing false sensor reading

What To Do

  1. F4 does not prevent basic timed cooking — you can still use manual time-cook mode.
  2. Sensor cooking and temperature-based auto programs will be unavailable until F4 is resolved.
  3. Professional replacement of the cavity sensor is required.

Need Professional Help with Error Code F4?

Our highly trained Kenmore technicians can diagnose and fix this error code quickly — using factory-certified parts and a 30-day warranty.

Other Kenmore Microwave Error Codes

PF Kenmore Microwave PF Error Code — Power Failure F1 Kenmore Microwave F1 Error Code — Control Board Fault F2 Kenmore Microwave F2 Error Code — Shorted Keypad F3 Kenmore Microwave F3 Error Code — Humidity Sensor Fault F5 Kenmore Microwave F5 Error Code — Door Switch Fault F6 Kenmore Microwave F6 Error Code — Communication Error
View All Microwave Codes

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