Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp F4 Error Fix: Humidity Sensor Failure

The humidity/steam sensor used for automatic cook functions has failed. Sensor cook features will not work. Clean sensor. Replace sensor if defective.

warning2 fixes available✨ Free fix available

Quick Answer

Error F4 on the Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp means: Humidity Sensor Failure. The top-ranked community fix is “Test and Replace Humidity Sensor” (medium difficulty, ~40 min, DIY cost: $15-$25). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · microwave

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many microwave repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $120-$200.

Other Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp Error Codes

BUTTONS UNRESPONSIVE

Buttons Not Responding

Display Goes Blank

Door Will Not Open or Close

2 fixes

EXHAUST FAN WEAK

Exhaust Fan Weak or Noisy

2 fixes

Touchpad/Keypad Shorted

2 fixes

Oven Cavity Overheated

2 fixes

Touchpad/Keypad Open or Shorted

2 fixes

Control Board Relay Failure

2 fixes

People Also Ask About Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp Error F4

What does error code F4 mean on a Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp?

Error code F4 on the Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp means: Humidity Sensor Failure. The humidity/steam sensor used for automatic cook functions has failed. Sensor cook features will not work. Clean sensor. Replace sensor if defective.

How do I fix error code F4 on my Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp?

The most successful fix is "Test and Replace Humidity Sensor" (medium difficulty, ~40 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

Is error code F4 on a Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp serious?

This error is rated warning severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp error F4 myself?

Yes — the top-ranked community fix ("Test and Replace Humidity Sensor") is rated medium difficulty and takes about 40 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Needle-nose pliers.

How much does it cost to repair Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp error F4?

DIY cost: $15-$25. Professional repair typically costs $120-$200. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp have?

The Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp has 8 other known error codes, including: BUTTONS UNRESPONSIVE (Buttons Not Responding), DISPLAY BLANK (Display Goes Blank), DOOR ISSUE (Door Will Not Open or Close), EXHAUST FAN WEAK (Exhaust Fan Weak or Noisy), F1 (Touchpad/Keypad Shorted), and 3 more.

What other error codes does the Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp have?

The Maytag MMV4207JZ 1.9 cu ft Over-the-Range Microwave with Dual Crisp has 8 other known error codes:

BUTTONS UNRESPONSIVE — Buttons Not Responding (2 fixes)
DISPLAY BLANK — Display Goes Blank (2 fixes)
DOOR ISSUE — Door Will Not Open or Close (2 fixes)
EXHAUST FAN WEAK — Exhaust Fan Weak or Noisy (2 fixes)
F1 — Touchpad/Keypad Shorted (2 fixes)
F2 — Oven Cavity Overheated (2 fixes)
F3 — Touchpad/Keypad Open or Shorted (2 fixes)
F5 — Control Board Relay Failure (2 fixes)

Ad Space — banner

Replace ADSENSE_PUBLISHER_ID in AdUnit.tsx