JennAir Wall Oven Code F3 E2: the cavity temperature sensor circuit

What F3 E2 means

JennAir built-in wall ovens like the JJW2830DS and JJW2830LL display F3 E2 when there may be a problem with the Oven Temperature Sensor, the control, or the associated wiring. The sensor feeds the control the cavity temperature so it knows when to heat and when to stop. Owners see the code, and the oven may not preheat or hold temperature. On some JennAir ranges the same code also covers a warming drawer sensor. A preheat may never finish.

Common causes of F3 E2

Oven Temperature Sensor open, shorted, or out of range
Control not reading the sensor signal properly
Worn wiring or connector between sensor and control

✓ One safe check you can try

1. Press Cancel and let the oven cool completely. 2. Turn the oven breaker off for a minute, then back on. 3. Run a short preheat to 350°F and watch for the code. 4. If F3 E2 shows again, stop baking and call us. Never reach into the cavity to move the sensor or pull on its lead.

! Why to stop there

A bent or loosened sensor can look fine yet read wrong.
We measure the sensor and its circuit rather than swapping parts on a guess.
Running an oven that cannot sense heat risks poor cooking results or an overheated cavity.

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.

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Other Wall Oven codes

FC E9JennAir Wall Oven Code FC E9: Wi-Fi power module wiring Feature Not AvailableJennAir Wall Oven Message "Feature Not Available": Follow the Prompt on the Display Flashing Time, Clock, 12:00, Power Loss or Enter TimeJennAir Wall Oven Display Flashing Time or 12:00: Set the clock after power loss Locked, Lock or LocJennAir Wall Oven Display Locked, Lock or Loc: Controls and door are locked Press Cancel to ResetJennAir Wall Oven Message "Press Cancel to Reset": Clear and power cycle Probe or Insert ProbeJennAir Wall Oven Display Probe or Insert Probe: Meat probe needed PUSH or PSHJennAir Wall Oven Display PUSH or PSH: Press start Sabbath, Sab, 5Ab, or 5A7JennAir Wall Oven Display Sabbath, Sab, 5Ab or 5A7: Sabbath mode is on

F3 E2F3 E2 questions

What is the oven temperature sensor?

It is a small probe in the cavity whose resistance changes with heat. The control reads that value to manage the elements. If the signal is missing or implausible, F3 E2 appears.

My oven is heating but shows F3 E2. Is it safe?

Do not rely on it. If the control cannot read the sensor, it cannot regulate temperature properly. Turn the oven off and have it checked.

Is the same sensor used for the warming drawer?

On certain JennAir ranges, F3 E2 also names a warming drawer sensor. On wall ovens, treat it as the oven cavity sensor. Either way, we need your model number to know which sensor applies.