F2 and E03 share a description: the keypad (user interface) reported a problem to the control board.
Model compatibility: KitchenAid reuses codes across series and model years, so F2 / E03 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
Keypad (user interface) reported a problem to the control board; the keypad or its wiring may be at fault.
KitchenAid describes F2 and E03 with one sentence: the keypad (user interface) reported a problem to the control board. On an over-the-range microwave, the article points to the keypad or its wiring.
The keypad as the reporter
You press the keypad, also called the user interface, to give the microwave instructions. In KitchenAid’s text it is the part sending the report, and the control board receives it. The article lists no button checks, no cleaning and no physical inspection, so none are suggested.
The steps
Breaker off, one minute.
Breaker on.
Watch for one minute to see whether F2 or E03 returns.
Check that the microwave operates.
Two numbers, one answer
The two codes lead to a single page of advice. Neither is a user fault with the other a part fault. If one day shows F2 and another shows E03, treat them as the same keypad report, and jot down the date and code each time for when you book service.
If it comes back
A returning code goes to service in KitchenAid’s flow.
When F2 or E03 stays on after the reset, call (310) 363-8964 for KitchenAid microwave service in Los Angeles. Say which code you saw and what the model number is.
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 KitchenAid appliance?
Book a specialist visit for a clear estimate and approval before any repair.