Published September 2, 2026Updated October 17, 2026
Content status:
Verified
Error codeF4E5
ApplianceMicrowave
Quick answer
F4E5 on a JennAir built-in microwave names the weight sensor or the wiring connected to it.
Model compatibility: JennAir reuses codes across series and model years, so F4E5 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Possible problem with the microwave weight sensor, or the associated wiring.
A microwave that weighs its food is unusual to imagine, yet that is the sensor behind F4E5. On a built-in JennAir the microwave weight sensor, or its wiring, may have a problem.
Purpose of the sensor
Generally, a weight sensor helps a microwave estimate how much food it holds, which certain automatic functions need. JennAir names no functions and no symptoms for this code, so what still works is not stated.
JennAir’s steps
Switch the unit off at its breaker(s) for one (1) minute.
Power it up again.
Watch for one (1) minute to confirm F4E5 stays away.
Verify operation.
When the code returns
Call a technician. Only the sensor and the wiring are listed, with nothing like emptying the cavity or shifting the turntable, and no owner fixes are suggested beyond what the manufacturer gives.
Do not assume a cause
Blaming the turntable or the last dish heated is tempting, but the article does not. It names the weight sensor and wiring only. If you remember the function in use, say so, without presuming that the food or dish was responsible.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your JennAir appliance?
Book a specialist visit for a clear estimate and approval before any repair.
