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Error code reference

Maytag Dryer Error Code 15

Thermistor possible open.

Maytag codesMaytag dryer codes

Thermistor possible open.

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What 15 means on a Maytag dryer

Error code 15 on a Maytag dryer indicates the control board has detected a thermistor reading that falls outside the expected resistance range. The thermistor is a temperature-sensing component, typically located on or near the exhaust duct or heating element housing, that continuously feeds temperature data to the control board. When the board receives a signal that is either too high, too low, or erratic compared to calibrated parameters, it throws code 15 and may suspend the heating cycle to prevent damage or unsafe operation.

For homeowners, the thermistor is essentially your dryer's thermometer. It tells the machine how hot the air inside the drum is so it can regulate heat properly. When this sensor malfunctions or its wiring is damaged, the dryer can no longer trust its own temperature readings. Code 15 is the machine's way of flagging that something is wrong with this measurement system before a problem like overheating or under-drying occurs.

The fault can stem from a failed thermistor, a wiring issue between the sensor and control board, or in less common cases, a control board that is misreading a valid signal. Diagnosing this code requires a multimeter to check thermistor resistance against the manufacturer's specified range at room temperature.

Source: manufacturer service documentation.

Common causes of 15

  1. 01

    Failed thermistor

    Part replacement

    The thermistor itself has failed and is sending a resistance value outside the acceptable range for the control board. This is the most common cause and occurs when the component degrades from repeated heat cycling over time.

  2. 02

    Damaged or disconnected wiring harness to thermistor

    Wiring / connection

    The wiring harness connecting the thermistor to the control board may have a broken wire, corroded connector, or loose terminal. This disrupts the resistance signal and causes the control board to read an out-of-range value.

  3. 03

    Corroded or burnt thermistor connector pins

    Wiring / connection

    Heat and moisture inside the dryer can corrode the connector pins at the thermistor plug, increasing resistance in the circuit and pushing the reading out of the expected range.

  4. 04

    Faulty control board

    Part replacement

    If the thermistor and wiring both test within spec, the control board itself may be misinterpreting the signal due to a failed input circuit. This is the least common cause and should only be considered after the sensor and wiring are confirmed good.

See the test procedure for each cause

Frequently asked questions about 15

What does error code 15 mean on a Maytag dryer?
Error code 15 means the control board has detected that the thermistor is reading outside its expected resistance range. The thermistor is the temperature sensor that monitors air temperature inside the dryer. The code indicates either the sensor has failed, the wiring to it is damaged, or the connector is corroded.
How do I fix error code 15 on a Maytag dryer?
Start by unplugging the dryer and locating the thermistor, usually near the exhaust duct or heating element housing. Use a multimeter to measure the thermistor's resistance and compare it to the specification in your model's service manual. A room-temperature reading of roughly 10,000 to 11,000 ohms is typical for many Maytag thermistors, but confirm with your specific model. If the reading is open, shorted, or far outside spec, replace the thermistor. If the sensor reads correctly, inspect the wiring harness and connector for damage or corrosion.
Can I still use my Maytag dryer with error code 15 active?
Running the dryer with code 15 active is not recommended. Without accurate thermistor data, the control board cannot properly regulate heat, which risks overheating the drum and laundry or running without adequate heat at all. Some models will halt the heating cycle entirely when this code is present. Address the fault before continued use.
How much does it cost to fix error code 15 on a Maytag dryer?
If the thermistor is the cause, the part typically costs between $10 and $30 and takes about 30 minutes to replace for someone comfortable with basic appliance repair. A wiring repair costs little to nothing in parts if you are soldering or using connectors you have on hand. If the control board has failed, the part can range from $100 to $250, and professional labor adds another $100 to $150 in most markets. Confirming the diagnosis with a multimeter before ordering parts avoids unnecessary costs.
How do I test the thermistor to diagnose error code 15?
Unplug the dryer, access the thermistor, and disconnect its wiring harness. Set a multimeter to the ohms setting and probe both thermistor terminals. At room temperature, a functional thermistor should show a resistance reading within the range specified in your model's service documentation, commonly around 10,000 ohms. A reading of zero (short) or infinite resistance (open circuit) confirms the thermistor has failed and needs replacement. If the thermistor reads correctly, check the harness for continuity from the sensor to the control board connector.

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