What causes the E1 code on a Whirlpool dryer?

Failed or disconnected exhaust thermistor: The exhaust thermistor sits on the blower housing / exhaust duct. Test it with a multimeter — it should read roughly 10K ohms at room temperature. An open reading or a disconnected wire sets E1. Wiring or connector fault to the exhaust thermistor: Check the harness between the exhaust thermistor and the control board for breaks or corrosion. Main control board (less common): Only after the thermistor and wiring test good.

Whirlpool · Dryer Moderate

E1 — Exhaust Thermistor Open/Shorted

E1 indicates the exhaust (outlet) thermistor is reading open or out of range, so the control cannot regulate drying temperature. On Whirlpool/Cabrio dryers E1 is the EXHAUST thermistor and E2 is the inlet thermistor (on full-code models, F3E1 = exhaust, F3E3 = inlet). Do not replace the inlet thermistor for an E1.

Keep using it?: Yes, with caution
DIY difficulty: Moderate
Typical cost: $15-30
Verified against: producthelp.whirlpool.com ↗

The fix

Inlet thermistor

Inlet thermistor open circuit

$15-30 moderate difficulty 45 min Tools: multimeter, screwdriver, nut driver

Diagnose first: Test thermistor with multimeter before replacing — should read ~10K ohms at room temperature. Often just a disconnected wire.

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How to fix it

Unplug the dryer. Locate the exhaust thermistor on the blower housing / exhaust duct.
Test the thermistor resistance — about 10K ohms at room temperature. Open or wildly out of range = replace it.
Inspect the wiring and connector to the exhaust thermistor for damage.
Replace the exhaust thermistor (typically $15-$30) if it tests open or out of range.

Why it happens

Typical signs: E1 shown on the display · No heat or poor temperature regulation · Cycle ends early or runs cold

Failed or disconnected exhaust thermistor The exhaust thermistor sits on the blower housing / exhaust duct. Test it with a multimeter — it should read roughly 10K ohms at room temperature. An open reading or a disconnected wire sets E1.
Wiring or connector fault to the exhaust thermistor Check the harness between the exhaust thermistor and the control board for breaks or corrosion.
Main control board (less common) Only after the thermistor and wiring test good.

Other parts sometimes needed

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Whirlpool dryer exhaust thermistor Common replacement
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More Whirlpool dryer codes

AF AF — Airflow Restriction E2 E2 — Outlet (Exhaust) Thermistor Shorted Err Err — Door Not Fully Closed F01 F01 — Main electronic control board failure F02 F02 — User Interface / Keypad Failure F1E1 F1E1 — Stuck Motor Relay on Main Control

All Whirlpool codes → All dryer codes →

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: producthelp.whirlpool.com.