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Error code reference

KitchenAid Dryer Error Code E1

Temperature sensing circuit is open.

KitchenAid codesKitchenAid dryer codes

Temperature sensing circuit is open.

First step from the service manual

Refer to TEST #3a.

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

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What E1 means on a KitchenAid dryer

The E1 error code on a KitchenAid dryer indicates that the temperature sensing circuit is open. An open circuit in this context means that electrical continuity has been broken somewhere in the wiring or components that make up the temperature sensing loop. The dryer's control board monitors this circuit continuously, and when it detects that the signal from the temperature sensor is absent or outside the expected parameters, it triggers E1 and typically halts the heating cycle to prevent overheating or damage.

The temperature sensing circuit generally includes the thermistor (a resistor whose resistance changes predictably with temperature), the associated wiring harness connectors, and the control board terminals that receive the signal. A true open circuit can result from a failed thermistor, a broken wire in the harness, or a loose or corroded connector. Thermistors in dryers can fail due to age, heat exposure, or physical damage, and when they do, they often fail open rather than shorted, which is precisely the condition E1 is designed to detect.

The designated starting point for diagnosis is TEST #3a, which is the structured electrical test for the temperature sensing circuit. This test will typically involve checking resistance values at the thermistor and continuity through the wiring harness. Technicians should inspect all connectors in the sensing circuit for corrosion, looseness, or heat damage before replacing any components, as a poor connection can mimic a failed thermistor and cause an intermittent or persistent E1 fault.

Source: manufacturer service documentation.

Common causes of E1

  1. 01

    Failed thermistor

    Part replacement

    The thermistor is the most common culprit. When it fails open, it breaks the sensing circuit entirely, triggering E1. Testing with a multimeter will show no continuity or a resistance reading far outside the expected range for the current temperature.

  2. 02

    Loose or disconnected wiring connector

    Wiring / connection

    A connector in the thermistor wiring harness that has vibrated loose or pulled apart will create an open circuit. Visually inspect and firmly reseat all connectors in the temperature sensing circuit before replacing parts.

  3. 03

    Broken wire in the harness

    Wiring / connection

    A wire in the sensing circuit harness can break internally while still appearing intact externally. This is identified during continuity testing of each wire segment as directed in TEST #3a.

  4. 04

    Corroded or burned connector terminals

    Wiring / connection

    Heat and moisture exposure over time can corrode or burn the terminals at the thermistor connector or control board, increasing resistance to the point where the circuit reads as open. Inspect terminals closely for discoloration or oxidation.

  5. 05

    Faulty control board

    Part replacement

    If the thermistor, wiring, and all connectors test within spec, the control board itself may have a damaged input circuit for the temperature sensor. This is typically the last component to suspect after all other elements have been cleared.

See the test procedure for each cause

Frequently asked questions about E1

What does E1 mean on a KitchenAid dryer?
E1 on a KitchenAid dryer means the temperature sensing circuit is open, indicating that the control board is not receiving a valid signal from the thermistor. This breaks the dryer's ability to monitor drum temperature and will typically stop normal operation. The fault points to the thermistor itself, the wiring harness, or a connector in that circuit. Diagnosis should begin with TEST #3a as specified in the dryer's technical documentation.
Can I fix the E1 error on my KitchenAid dryer myself?
A knowledgeable DIYer with a multimeter can often diagnose and resolve E1 by inspecting connectors and testing the thermistor for continuity. If the thermistor has failed, replacing it is a relatively straightforward repair on most KitchenAid dryer models. However, if the fault traces back to wiring damage inside the harness or a failed control board, the repair becomes more complex and may benefit from professional service.
Is it safe to keep using my dryer when E1 is displayed?
You should not continue running the dryer while E1 is active. The error indicates the dryer has lost its ability to sense temperature accurately, which means it cannot regulate heat properly. Running it in this state risks overheating the drum, damaging fabrics, or creating a fire hazard. The dryer should be left off until the sensing circuit is diagnosed and repaired.
How much does it cost to repair a KitchenAid dryer E1 error?
If the fix is simply reseating a loose connector, there may be no parts cost at all. A replacement thermistor typically costs in the range of $15 to $50 depending on the specific model. If a control board replacement is needed, parts alone can range from $100 to $300 or more. Adding professional labor, total repair costs can range from around $80 for a simple connector fix to $400 or higher for a board replacement.
Will resetting my KitchenAid dryer clear the E1 error code?
A reset may temporarily clear the E1 code, but if the underlying open circuit has not been repaired, the error will return as soon as the dryer attempts to run and checks the sensing circuit again. Resetting without repairing is not a solution. The temperature sensing circuit must be tested and the faulty component or connection must be corrected to permanently resolve the fault.

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