Whirlpool Microwave F8E5 — What It Means & How to Fix It

Also shown as F8 E5 on some models.

By Callum Griffin · Researched and verified against manufacturer and repair documentation · Reviewed September 2026

F8E5 means the oven could not execute the function, with a possible problem in the exhaust air temperature sensor or its wiring; reset power and call service if it repeats.

What this code means

Whirlpool says that with F8E5 the oven could not execute the function and there may be a problem with the exhaust air temperature sensor, or the associated wiring.

Whirlpool over-the-range microwaves.

Most likely causes

CauseHow likelyDIY-fixable?
Exhaust air temperature sensor fault Common No — technician job
Wiring fault Occasional No — technician job
Glitch Occasional Yes — breaker reset

What you can try yourself

  1. Reset power for one minute.
  2. Monitor.
  3. Verify operation.
  4. Service on a repeat.

When to call a technician

Typical professional repair cost: About $120–$250.

Frequently asked questions

What does F8E5 mean?

Possible exhaust air temperature sensor or wiring problem; the oven could not execute the function.

What should I do?

Reset power for one minute, then call service if it returns.

Is it the vent fan?

Whirlpool names the exhaust air temperature sensor, not the fan.

Sources checked

Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.

Related Whirlpool codes

More: all Whirlpool microwave codes · all Whirlpool codes · search by symptom