Microwave error codes: reviewed brand-by-brand guides
Look up reviewed microwave error-code diagnostics by brand, with safe exterior checks and strict high-voltage service boundaries.
Start by copying the complete display code before clearing it. The same characters can represent different conditions on different manufacturers, so the brand-specific path matters. These guides use official support material as the preferred evidence layer and do not turn a code into an unsupported part diagnosis.
Run the interactive diagnostic Browse all microwave troubleshooting
GE Appliances microwave error codes
KitchenAid microwave error codes
LG microwave error codes
Samsung microwave error codes
Why a code may still require follow-up questions
The control reports what it detected, not necessarily the root cause. A code can be triggered by an installation condition, blocked path, load or detergent issue, door or water-supply condition, or a component that needs professional testing. Appliance Verdict therefore keeps the code as the entry point and asks only the external or observational questions supported by the reviewed manufacturer material.
Manufacturer source basis
- GE Appliances — Microwave - Error, Fault or Function Codes
- GE Appliances — Microwave Drawer - Messages and Error Codes on the Display
- KitchenAid Product Help — F9 or F9E0 - Built-In Microwave
- LG USA Support — LG Microwave - Troubleshooting an F3 Error
- Samsung Support US — What does the error code on my Samsung microwave mean?
Use the exact owner/support documentation for your model when it differs from general guidance. Appliance Verdict is independent and is not endorsed by the manufacturers cited.
Safety boundary
Microwaves can retain dangerous high voltage even after they are unplugged. Appliance Verdict limits guidance to safe external checks and does not direct homeowners to remove the cabinet or test internal high-voltage components.
Do not defeat interlocks or protection systems just to clear an error. Stop for smoke, sparking, electrical shock, active uncontrolled leaking, a gas odor, or repeated breaker trips.