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Error code reference

Kenmore Dryer Error Code E71

Outlet Control Thermistor open circuit; thermistor or wiring defective.

Kenmore codesKenmore dryer codes

Outlet Control Thermistor open circuit; thermistor or wiring defective.

First step from the service manual

Check resistance of Outlet Control Thermistor and check wiring for open circuit. Resistance should be between 4.9K Ohm and 6.2K Ohm at room temperature (68-77°F or 20-25°C). Replace Outlet Control Thermistor and/or wiring and retest.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What E71 means on a Kenmore dryer

The E71 error code on a Kenmore dryer indicates an open circuit condition in the Outlet Control Thermistor circuit. The Outlet Control Thermistor is a temperature-sensing component that monitors the air temperature at the dryer's exhaust outlet. The dryer's control board continuously reads the resistance value from this thermistor to regulate heat output and ensure safe, efficient drying. When the control board detects an open circuit, meaning no valid resistance signal is received, it triggers E71 and typically halts operation to prevent uncontrolled heating.

At room temperature (68 to 77 degrees F, or 20 to 25 degrees C), the Outlet Control Thermistor should read between 4.9K Ohm and 6.2K Ohm. A reading outside this range, or no reading at all, confirms the thermistor or its associated wiring has failed. An open circuit specifically means the electrical path is broken entirely, which produces an infinite or unmeasurable resistance reading on a multimeter.

The most common causes of this fault are a failed thermistor, a broken wire in the harness leading to the thermistor, or a loose or corroded connector. Because the thermistor is located near the exhaust outlet, it is exposed to heat cycling over time, which can degrade both the component itself and the insulation on the wiring. Diagnosis involves disconnecting the thermistor and measuring its resistance directly, then inspecting the wiring harness for breaks, pinches, or connector issues before replacing any parts.

Source: manufacturer service documentation.

Common causes of E71

  1. 01

    Failed Outlet Control Thermistor

    Part replacement

    The thermistor itself has developed an internal open circuit and will read infinite resistance instead of the expected 4.9K to 6.2K Ohm range. Confirm by disconnecting it and measuring resistance directly with a multimeter.

  2. 02

    Broken or damaged wiring harness

    Part replacement

    The wiring between the thermistor and the control board may have a break, caused by heat exposure, abrasion, or pinching during a previous repair. Inspect the full length of the wire harness for visible damage or breaks.

  3. 03

    Loose or corroded connector

    Wiring / connection

    A connector plug at the thermistor or control board end may have worked loose or developed corrosion, interrupting the circuit without any visible wire damage. Unplug and reseat connectors and inspect pins for oxidation.

  4. 04

    Control board fault

    Part replacement

    In rare cases, the control board itself may have a failed input circuit for the thermistor, causing it to report an open circuit even when the thermistor and wiring test correctly. This is a diagnosis of exclusion after the thermistor and wiring check out within spec.

See the test procedure for each cause

Frequently asked questions about E71

What does E71 mean on a Kenmore dryer?
E71 indicates the control board has detected an open circuit in the Outlet Control Thermistor circuit. This thermistor monitors exhaust air temperature, and the dryer is receiving no valid resistance signal from it. The fault points to either a failed thermistor, a break in the wiring, or a connection problem. At room temperature, the thermistor should measure between 4.9K Ohm and 6.2K Ohm.
Can I fix the E71 error myself?
Yes, this repair is within reach for a technician or a DIYer comfortable using a multimeter. The first step is to check the resistance of the Outlet Control Thermistor and inspect the wiring for any open circuit or loose connections. If the thermistor reads outside the 4.9K to 6.2K Ohm range or shows infinite resistance, replacing the thermistor is the likely fix. Always unplug the dryer before accessing internal components.
Is it safe to keep using my Kenmore dryer with an E71 error?
It is not recommended to continue using the dryer while E71 is active. The Outlet Control Thermistor is part of the heat regulation system, and without a valid signal from it, the dryer cannot properly monitor exhaust temperatures. Running the dryer in this condition could result in overheating or inadequate drying performance.
How much does it cost to fix an E71 error on a Kenmore dryer?
If the thermistor itself needs to be replaced, part costs typically range from around $15 to $50 depending on the specific model. If a professional technician is needed, total repair costs including labor can range from $100 to $200. Repairing a wiring harness or connector issue yourself would cost very little beyond basic tools.
Will resetting the dryer clear the E71 error code?
A reset may temporarily clear the E71 code, but it will return as soon as the control board checks the thermistor circuit again and detects the open circuit. The underlying fault, whether a failed thermistor, broken wire, or bad connection, must be physically repaired before the error will clear permanently. Resetting without repairing does not fix the problem.

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