Booking today · Houston service windows 9–12 · 1–4 · 4–7 Independent Maytag specialists · Licensed & insured Mon–Fri 7:00 AM - 8:00 PM · Sat 8:00 AM - 6:00 PM
(713) 936-6390 Book a House Call
Error code · Microwave

Maytag Microwave Code F4E1: Thermistor for the Cavity Temperature

If F4E1 appears on a Maytag over-the-range microwave, the control is flagging the cavity temperature thermistor or its wiring. This sensor measures the heat inside the oven cavity where your food sits. When the control cannot…

Medium · inspection needed
Book a House Call(713) 936-6390
Code
F4E1
Appliance
Microwave
Brand
Maytag
Warranty
30-day workmanship

What F4E1 means

If F4E1 appears on a Maytag over-the-range microwave, the control is flagging the cavity temperature thermistor or its wiring. This sensor measures the heat inside the oven cavity where your food sits. When the control cannot get a normal reading from it, the display shows F4E1 and cooking may be interrupted. Many of these microwaves are older units that are still in daily use.

Common causes of F4E1

  • The cavity temperature thermistor
  • Wiring between the sensor and the control
  • A one-time glitch after a power dip
✓ One safe check you can try

1. Open the door and let the cavity cool if you just used it. 2. Turn the circuit breaker off for one minute and back on. 3. Watch the display for a minute to confirm F4E1 stays gone. 4. Run a short cycle with a cup of water to make sure the microwave behaves.

! Why to stop there
  • If F4E1 comes back, the reset has told us the cause is real and not a passing glitch
  • We test the sensor and its lead to see which one is out of range
  • The price is given in writing before we begin
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

F8E5Maytag Microwave Code F8E5: Sensor in the Exhaust Air Path F9Maytag Microwave Code F9: Two Boards to Check F9Q or F9Q1Maytag Microwave Code F9Q or F9Q1: Reset and Function Failure FC E1, FC E2 or FC E3Maytag Microwave Code FC E1, FC E2 or FC E3: Wi-Fi Connection Lost FC E7Maytag Microwave Code FC E7: Microwave Cannot Reach the Router FC E8 or Registration ErrorMaytag Microwave Code FC E8 or Registration Error: Setup Entry Problem Flashing 0:00Maytag Countertop Microwave Code Flashing 0:00: Clock Reset After Power Loss Flashing Colon or PFMaytag Microwave Code Flashing Colon or PF: Power Loss Notice
F4E1F4E1 questions
What is the cavity thermistor?

It is a small temperature sensor that tells the control how warm the inside of the oven is. F4E1 means the control cannot rely on its signal or the wire that carries it.

Will F4E1 stop my microwave completely?

It can. Many units block heating when a sensor reading is missing. Some still run for a short time. Either way, repeated codes mean the sensor circuit should be checked.

Is my older Maytag worth fixing for F4E1?

Often a sensor-circuit repair is reasonable. We give you the written price first and tell you plainly if replacing the microwave would be the better choice.

Book a visit

Still seeing F4E1?

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

(713) 936-6390