Speed Queen Dryer N5 Error: Outlet Thermistor Fault - Diagnosis and Fix

Quick Answer

Speed Queen dryer N5 error means the outlet thermistor - the temperature sensor that monitors exhaust air exiting the dryer - is reading a temperature that falls outside the control board's acceptable range. This is almost always a failed thermistor or a broken wire in the thermistor's harness. The thermistor is a small NTC (negative temperature coefficient) sensor typically located on the exhaust duct inside the dryer cabinet. Test it with a multimeter: at room temperature (~70°F) it should read approximately 10,000 to 12,000 ohms. Outside that range, replace it.

Speed-queenDryerSeverity: moderateDifficulty: intermediate88% DIY Success

Time to Fix

20–45 min

Difficulty

intermediate

Parts Cost

$14 – $32

Tools Needed

Multimeter (resistance mode), Phillips screwdriver

Wrong code?

Not seeing N5 on your display?

Select what your appliance is actually doing and we'll take you to the right guide.

restricted exhaust, overheating

ER-RO

temperature sensor failure

LgTE

thermistor out of range

SamsungtE

What Does the N5 Code Mean?

The outlet thermistor on Speed Queen dryers tracks the temperature of air leaving the drum, giving the control board real-time data to modulate heat output and prevent overheating. N5 triggers when the thermistor reports a reading that is either impossibly high (short circuit) or impossibly low (open circuit). Unlike a blown thermal fuse, a failed thermistor does not prevent the dryer from running - but it means the dryer is operating without accurate temperature feedback, which can cause overheating or underdrying. The control board correctly refuses to continue normal operation under N5.

Most Likely Causes

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

Failed NTC thermistor (resistance out of range from aging or heat stress)40%

Open circuit in thermistor wiring harness24%

Thermistor physically damaged from a duct cleaning tool22%

Corroded or disconnected thermistor connector14%

Symptoms You May Notice

N5 displayed on dryer LCD, cycle stops or will not start
Dryer displays N5 immediately on startup
Dryer runs for a few minutes then N5 appears
No heat accompanied by N5 (if thermistor short is affecting heat control)

Can you reset a Speed-queen dryer to clear the N5 code?

After replacing the thermistor, unplug for 60 seconds, plug back in, and run a test cycle. N5 should not return if the new thermistor reads within the 10,000-12,000 ohm range at startup.

Tools Required for Diagnosis

Multimeter (resistance mode)Phillips screwdriverNeedle-nose pliers (connector removal)

Diagnostic Checklist

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

Perform a power-cycle reset first

Before opening the dryer, unplug for 60 seconds and restart. N5 from a momentary sensor spike will clear on reset. If N5 returns immediately on the next power-up or within the first minutes of a cycle, the thermistor or its wiring has failed and needs diagnosis.

Locate the outlet thermistor

Test thermistor resistance at room temperature

Inspect wiring harness and connector

ComponentComponent Under Test

Expected Range10000–12000 ohms

ConditionIf Open (OL) or infinite, replace component.

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	OEM Number	Estimated Price
Outlet Thermistor (NTC Sensor)70122801 · $14–$32	70122801	$14 – $32

Verify part fitment for your Speed-queen model

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs

Labor Approach

Our Verdict

REPAIR

Estimated Cost: $23 (Parts) vs $700 (New Machine)

Frequently Asked Questions

What is the N5 error on a Speed Queen dryer?

N5 is the outlet thermistor fault on Speed Queen dryers. The outlet thermistor measures the temperature of air leaving the drum through the exhaust duct. N5 means the control board received a reading that falls outside the physically possible range - either a short circuit (0 ohms) or an open circuit (OL), both of which indicate sensor failure.

What resistance should a Speed Queen dryer thermistor read?

At room temperature (65-75°F), a Speed Queen outlet thermistor in good condition reads approximately 10,000 to 12,000 ohms. This is a negative temperature coefficient (NTC) sensor - resistance decreases as temperature rises. A fully warm thermistor mid-cycle reads much lower. Test at room temperature before the dryer has run for an accurate comparison.

Can N5 be caused by a blocked vent on a Speed Queen dryer?

N5 is a sensor fault, not an airflow fault - it will not be caused by a blocked vent. A blocked vent causes ER RO, not N5. However, if a vent blockage caused the dryer to overheat repeatedly, the sustained high heat can accelerate thermistor aging and cause N5 to appear sooner than it otherwise would. Always clear an ER RO fault before assuming the thermistor is at fault.

Is it safe to run a Speed Queen dryer with N5 showing?

No. The control board correctly shuts down operation on N5 because it cannot accurately regulate drum temperature without a working thermistor. Running without temperature feedback risks overheating the drum, igniting lint, or damaging the heating element. Replace the thermistor before resuming use.

Related Speed-queen Dryer Error Codes

Code: HUBSpeed Queen Dryer Error Codes: Full List Code: ER-ROSpeed Queen Dryer ER RO Error: Exhaust Restricted Code: RESETHow to Reset a Speed Queen Dryer

Same Fix on Other Brands

Lg dryerTE: LG Dryer TE Error: Thermistor Fault Samsung dryertE: Samsung Dryer tE Error: Temperature Sensor

Models Known to Experience N5 Errors

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

ADE3SRGS176TW01, ADE4BRGS176TW01, ADEE9RGS173TW01, DE25CS2, DE40CS2

Last verified for technical accuracy on March 14, 2026