JennAir Built-In Microwave Code F3 E2: general oven sensor in question

What F3 E2 means

F3 E2 appears on JennAir built-in microwaves, microwave drawers, and combination wall oven microwave cavities, including the JMC2430DS and JMC8130DDS, when there may be a problem with the Oven Temperature Sensor, the control, or the associated wiring. Without a trustworthy temperature reading the unit stops cooking rather than guess. The display shows the code and heating generally halts. Heating stays off until a valid reading returns.

Common causes of F3 E2

Oven Temperature Sensor giving an open or shorted reading
Control unable to interpret the sensor signal
Wiring between sensor and control worn or disconnected

✓ One safe check you can try

1. Press Cancel, open the door, and let everything cool. 2. Turn the circuit breaker off for a full minute and then restore it. 3. Start a brief cycle to see if the code returns. 4. If F3 E2 comes back, leave the unit off and arrange a visit. Please do not pry off trim or touch internal wiring.

! Why to stop there

Telling a sensor problem from a control problem needs meter readings.
The area behind the cavity carries high voltage when the unit is on.
We quote parts and labor in writing before any repair.

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Microwave codes

FC E7JennAir OTR Microwave Code FC E7: no connection to your router FC E8JennAir OTR Microwave Code FC E8: registration rejected, check the SAID number FCE8JennAir OTR Microwave Code FCE8: wrong appliance type or model chosen Flashing 0:00JennAir Countertop Microwave Message Flashing 0:00: Reset the Clock Flashing ":" or PF in displayJennAir OTR Microwave Message Flashing ":" or PF: Power Failure or Clock Off LOC or "L" or Padlock IconJennAir Microwave Message LOC, L or Padlock Icon: Control Lock Enabled Locked, Lock or LocJennAir Built-In Microwave Message "Locked, Lock or Loc": Control Lock On ":" or "." in displayJennAir Built-In Message ":" or "." in display: clock needs setting

F3 E2F3 E2 questions

What triggers F3 E2?

The control found the oven temperature sensor circuit unreadable. That could be the sensor itself, the control, or the wiring, which is why a test comes before a part.

Does this code mean the microwave is dangerous?

It means the unit cannot confirm its temperature, so it should not be run. Nothing is unsafe while it sits unplugged or off, but have it checked before regular use.

How is this different from F3 E0 or F3 E1?

Those two name the upper and lower oven sensors. F3 E2 names the general oven temperature sensor, so we start our checks there. Using the exact code gives our technician a head start on the right test.