The short answer
This code reports a problem with the microwave weight sensor or its wiring or its wiring. The documented meaning names the microwave weight sensor or its wiring. Because the component only matters to specific automatic functions, the practical effect is narrower than the display suggests - use manual settings while it is sorted out.
This code and its neighbours on this appliance
Reference| Code | Meaning |
|---|---|
| F4 E5 | There may be a problem with the Microwave Weight Sensor, or the associated wiring. |
| F4 E6 | There may be a problem with the Microwave Wave Guide Temperature Sensor, or the associated wiring. |
| F4 E3 | There may be a problem with the Microwave Exhaust Air Temperature Sensor, or the associated wiring. |
What you see alongside the code
- The code appears only when an automatic function is selected — The check runs when the measurement is needed rather than continuously.
- The code appeared after a spill or a heavy clean — Contamination on a sensing component is a real and common cause.
- The code is intermittent — A connector rather than a failed component, and it points the diagnosis at the wiring.
- NEAR MISS - nothing works at all — A complete failure is not this code and belongs with a control fault.
What actually causes this, ranked
- Contamination on the sensing component — First because it is common and because the position of these components puts them in the path of everything that spills or steams.
- A connector or wiring fault — The run to a small sensing component is thin and it is routed through warm areas.
- A failed sensing component — The part the code names. It is a genuine cause and usually a modest part, but it ranks behind contamination and wiring because it fails less often than either.
Check in this order, and why
- Confirm manual cooking still works — It bounds the fault to one function and costs a single short cycle.
- Establish whether the code is constant or only on automatic programmes — It separates a failed component from one that only misreports under use.
- Check for anything obstructing or resting on the component — Where the measurement is physical, this is the free check that resolves a share of these.
The owner-safe procedure
- Run a short manual cycle to confirm the rest of the oven is well — This single test decides how urgent the fault is, and usually the answer is not very.
About 12 min
- Note which automatic functions fail and which still work — Functions sharing the same measurement fail together, and that grouping is the diagnosis.
About 8 min
- Check nothing is resting on or obstructing the mechanism — Only where it is visible without removing anything. Do not reach into a warm cavity.
About 5 min
Before you open anything
Safety
Switch off at the breaker before any panel is opened - a capacitor can hold a charge after the power is off. Do not attempt to clean or adjust a sensing component by reaching into a warm cavity, and never use a spray cleaner near one: contamination is a cause of this fault and adding liquid makes it worse. Put every screw you remove in one place. A fastener left in the base of a cabinet is a rattle at best and a short at worst.
When this is a service call
This becomes a service call once it is clear that manual cooking is fine and the automatic function is not. The likely causes are contamination and wiring rather than the component itself, so ask for both to be checked before a part is ordered. There is no safety reason to hurry. Ask whether the diagnosis is chargeable separately from the repair. On this class of fault the measuring is most of the work.
Neighbouring codes on this appliance
What this page does not cover
This page is generalized information about the code rather than about one appliance. It is written for F4 E5 as the KitchenAid oven code list documents it across the brand rather than for one family or model line. Where a family- or model-specific page exists for your unit it is the more specific answer and is linked from the code index for this appliance. The codes listed beside it in the table above are documented differently, so read the characters on your display carefully rather than working from a code that merely looks similar.
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