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Error code · Wall Oven

Maytag Wall Oven Code F4 E4: Humidity Sensor for Microwave Cooking

On a Maytag built-in wall oven with a microwave, F4 E4 concerns the microwave humidity sensor. That sensor lets the sensor-cooking programs judge how much steam is rising from the food. The code can also involve…

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Code
F4 E4
Appliance
Wall Oven
Brand
Maytag
Warranty
30-day workmanship

What F4 E4 means

On a Maytag built-in wall oven with a microwave, F4 E4 concerns the microwave humidity sensor. That sensor lets the sensor-cooking programs judge how much steam is rising from the food. The code can also involve the microwave appliance manager board that reads the sensor, or the wiring between the two. When the reading is missing or out of range, the control displays F4 E4. Sensor-based microwave programs are the first thing you may lose, though plain timed microwave cooking and the baking side of the oven can still be fine.

Common causes of F4 E4

  • The microwave humidity sensor
  • The microwave appliance manager board
  • Wiring and connectors between them
✓ One safe check you can try

1. Cut power at the breaker panel for one minute. 2. Restore power at the breaker. 3. Give it a minute and see whether F4 E4 reappears. 4. If the display is clear, try a short timed microwave run with a cup of water, and then a short bake.

! Why to stop there
  • Steam and cooking residue can affect a sensor over the years, which a reset cannot cure
  • We measure the sensor circuit before we decide on a part
  • The quote is in writing before the work, and the repair has a 30-day workmanship warranty
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 Wall Oven codes

Registration ErrorMaytag Wall Oven Message Registration Error: Connection Needed Temperature Reached Insert FoodMaytag Steam Wall Oven Message Temperature Reached Insert Food: Preheat Done F8 E3Maytag Wall Oven Code F8 E3: Oven Cooling Fan, Wiring and Control F8 E4, F8 E5Maytag Wall Oven Codes F8 E4 and F8 E5: Exhaust Fan Air Temperature Sensor F9 or F9 E0Maytag Wall Oven Code F9 or F9 E0: Supply Wiring Polarity Code shown as "F" and a number, beeping (older wall ovens)Maytag Older Wall Oven Code F With a Number and Beeping: Cancel, Then Power Down FC E1, FC E2, FC E3Maytag Wall Oven Codes FC E1, FC E2 and FC E3: Cannot Reach the Router FC E4, FC E5Maytag Wall Oven Codes FC E4 and FC E5: Wi-Fi Antenna Check
F4 E4F4 E4 questions
Which cooking modes does F4 E4 affect?

Mostly the programs that rely on sensing humidity from the food. Timed microwave power and conventional baking may keep working. Try each after the reset and note which one stops, because that helps us.

Can a damp kitchen cause F4 E4?

Humidity in the room is not the stated cause. The code is about the sensor, its board or its wiring. Still, a steamy kitchen and a tired connector can make a marginal circuit show up sooner.

Is a repair worth it on an older wall oven?

It depends on the part. We test first, then give you the cost in writing. If an older oven is not worth fixing, we tell you directly instead of selling a repair.

Book a visit

Still seeing F4 E4?

A technician diagnoses it on site and gives you the price in writing before any work starts.

(713) 936-6390