Jenn-Air Oven Error Code F4E1-0

F4E1-0 indicates that the microwave cavity temperature sensor circuit is open, meaning the control board cannot detect a valid signal from the sensor. This prevents the oven from accurately monitoring temperature inside the microwave cavity. The cause is typically a disconnected wire, a bad connector, or a failed sensor.

Using the microwave function while F4E1-0 is active is not recommended, because the control board cannot monitor cavity temperature properly. The conventional oven functions may still operate depending on how the unit is designed, but it is best to resolve the sensor fault before continued use to avoid potential overheating or further component damage.

Repair costs vary depending on the cause. If the fix is simply reseating a loose connector, there may be little or no parts cost involved, though a service call fee typically still applies. Replacing a failed temperature sensor generally costs between $50 and $150 for the part, with labor adding $100 to $250 depending on your area and the technician. If the main control board is at fault, parts and labor combined can range from $300 to $600 or more.

Some causes of F4E1-0 can be addressed by a confident DIYer. After disconnecting power, inspect the wiring connectors at the sensor and the main control board for loose or corroded connections, which can sometimes be reseated or cleaned without replacing parts. If the sensor itself has failed, replacing it requires identifying the correct part and safely accessing the microwave cavity housing, which may be more involved depending on the unit configuration.

Disconnecting power briefly may temporarily clear the code from the display, but F4E1-0 will return as soon as the control board scans the sensor circuit and detects the open condition again. A reset does not fix the underlying wiring or sensor fault, so the error will persist until the root cause is repaired.