KitchenAid Over-the-Range Microwave Code E03: keypad interface check

What E03 means

On KitchenAid over-the-range microwaves such as the KMHS120ESS or KMHC319ESS, E03 says there may be a problem with the keypad, which is the user interface, or the wiring joining it to the control. The panel may ignore touches, or the microwave may display the code the moment you try to start a cycle.

Common causes of E03

Keypad worn or not sending a clean signal
Wiring between keypad and control loose
Control confused after a power event

✓ One safe check you can try

1. Press Cancel. 2. Wipe the keypad with a dry cloth. 3. Unplug the microwave for one minute, or switch off its breaker if it is hard-wired, then restore power. 4. Press the Clock key. 5. If E03 returns, stop using the unit and call us.

! Why to stop there

Mounted above the range, the unit is heavy and tricky to access safely
We test the keypad signals before proposing a part
A written price comes first and a 30-day workmanship warranty follows

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

Registration ErrorKitchenAid Over-the-Range Microwave Message "Registration Error": Check the home network and try again Sabbath, Sab, 5Ab, or 5A6KitchenAid Built-In Microwave Display Sabbath, Sab, 5Ab or 5A6: Sabbath Mode is on SEKitchenAid Over-the-Range Microwave Code SE: Keypad or user interface problem Probe or Insert ProbeKitchenAid Combination Microwave Message "Probe" or "Insert Probe": Seat the meat probe in its jack PUSH or PSHKitchenAid Built-In Microwave Message PUSH or PSH: The oven is waiting for Start F4E9KitchenAid Over-the-Range Microwave Code F4E9: Smart Pop control or wiring flagged FC E1KitchenAid Over-the-Range Microwave Code FC E1: Wi-Fi link timed out F6KitchenAid Over-the-Range Microwave Code F6: Relay control board

E03E03 questions

What does E03 mean in short?

The microwave found its keypad or the wiring to it unreliable. That blocks input until the problem is corrected.

Is E03 the same as F2?

Both relate to the keypad on these hood microwaves, but they are separate codes and the technician interprets each one accordingly.

Should I try pressing harder?

No. Extra force can crack the panel. If light presses do nothing, the issue is electrical.