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Whirlpool Dryer F9 E2 Error Code: Outlet Thermistor Failure

Quick Answer

F9 E2 on a Whirlpool dryer means the outlet (exhaust) thermistor has failed or lost its signal to the control board. The dryer cannot safely regulate heat without this sensor and will typically stop the cycle. Check the vent for blockage first since overheating from restricted airflow can also trigger this code.

F9 E2 on a Whirlpool dryer means the outlet (exhaust) thermistor has failed or lost its signal to the control board. The dryer cannot safely regulate heat without this sensor and will typically stop the cycle. Check the vent for blockage first since overheating from restricted airflow can also trigger this code. If the vent is clean, test the thermistor with a multimeter: it should read close to 10,000 ohms at room temperature. Replacement thermistors cost $10-20.

WhirlpoolDryerSeverity: highDifficulty: intermediate85% DIY Success
Time to Fix
30–60 min
Difficulty
intermediate
Parts Cost
$10 – $20
Tools Needed
Multimeter (resistance mode), Phillips head screwdriver

What Does the F9 E2 Code Mean?

The temperature sensor at your dryer's exhaust outlet has stopped working. Without it, the dryer cannot control heat safely. Clean the vent first, then test and replace the thermistor if needed.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Thermistor element failure (open circuit)40%
Loose or corroded wire harness connector at thermistor24%
Control board input circuit fault22%
Partial vent blockage causing the thermistor to overheat and fail14%

Symptoms You May Notice

  • F9 E2 displayed on control panel
  • Dryer stops mid-cycle and displays error
  • Dryer runs but produces no heat (sensor-safe shutdown)
  • Cycle completes but clothes remain damp
  • Error appears after a long run or near end of cycle

Can you reset a Whirlpool dryer to clear the F9 E2 code?

Unplug the dryer for 60 seconds after cleaning the vent or replacing the thermistor. Plug back in and press Start to clear the F9 E2 code. If the code returns immediately without any heat being produced, the thermistor or its wiring is still at fault.

Tools Required for Diagnosis

Multimeter (resistance mode)Phillips head screwdriverNut driver (quarter-inch)Needle-nose pliers

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

1

Before touching the thermistor, clean the full exhaust vent system

Before touching the thermistor, clean the full exhaust vent system. A partial blockage that raises exhaust temps can trigger F9 E2 without the thermistor itself being defective.

2

Unplug the dryer and locate the outlet thermistor

3

Set multimeter to resistance (ohms) mode

4

Inspect the wire harness connector pins for corrosion

5

Install the new thermistor

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name
Outlet Thermistor (Exhaust Temperature Sensor)WP8577274 · $10–$20

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs
Labor Approach
Our Verdict
REPAIR
Estimated Cost: $15 (Parts) vs $750 (New Machine)

Frequently Asked Questions

What is the correct resistance for a Whirlpool dryer outlet thermistor?
At room temperature (approximately 77 degrees F / 25 degrees C), the thermistor should read close to 10,000 ohms (10K ohms). Resistance increases as temperature drops and decreases as temperature rises. A reading of open (infinite ohms) or near zero ohms at room temperature means the thermistor has failed.
Can F9 E2 be caused by a clogged vent even if the thermistor is fine?
Yes. A severely restricted vent forces exhaust temperatures so high that the thermistor can signal an out-of-range reading. Always clean the vent before testing the thermistor. If cleaning clears the code, the thermistor may have been detecting a genuine overheat condition rather than failing itself.
Is F9 E2 the same fault as E1 on Whirlpool dryers?
They are related but not identical. F9 E2 specifically identifies the outlet (exhaust) thermistor. E1 is a broader thermistor fault code that may refer to the inlet or exhaust thermistor depending on model. If you see E1 instead of F9 E2, also check the inlet thermistor near the heating element.
How long does a dryer thermistor last?
Most thermistors last the life of the dryer (10-15 years) under normal use. They fail early most often when the dryer has been run repeatedly with a blocked vent, exposing the sensor to sustained high temperatures well above its design range.
Can I bypass the outlet thermistor temporarily to run laundry?
No. Bypassing the thermistor removes all exhaust temperature monitoring, which creates a fire hazard. The dryer will run without any thermal cutoff on the exhaust side. Order the replacement part ($10-20) and use a laundromat in the meantime.

Related Whirlpool Dryer Error Codes

Code: HUBWhirlpool Dryer Error Codes GuideCode: F4 E4Whirlpool Dryer F4 E4 Error Code: Exhaust Blockage FixCode: F22Whirlpool Dryer F22 Error Code: Exhaust Temperature Too High

Same Fix Works on These Brands

Whirlpool shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

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Models Known to Experience F9 E2 Errors

This repair applies to most Whirlpool dryers with this error code. Common model numbers include:

WED5000DW, WED8500DC, WED9620HC, WED7300DW, WED4815EW

Last verified for technical accuracy on March 14, 2026