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Error code reference

Maytag Dryer Error Code F-25

Inlet thermistor has shorted (only appears in diagnostic test mode, electric models only).

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Inlet thermistor has shorted (only appears in diagnostic test mode, electric models only).

First step from the service manual

See TEST #4a - check wire connections at machine control and inlet thermistor.

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

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What F-25 means on a Maytag dryer

The F-25 error code on a Maytag electric dryer indicates that the inlet thermistor has shorted. This code only appears during diagnostic test mode and is not triggered during normal drying cycles. The inlet thermistor is a temperature-sensing component located in the airflow path at the dryer's air intake. It continuously monitors incoming air temperature and sends resistance-based signals to the machine control board. When the thermistor shorts internally, its resistance drops abnormally low, causing the control board to detect a fault condition and log the F-25 code.

A shorted thermistor differs from an open thermistor failure. In an open failure, the circuit is broken and resistance reads infinitely high. In a short, the thermistor's internal resistance collapses, often reading near zero ohms. This sends the control board an out-of-range signal that does not correspond to any valid temperature reading. Because this fault only surfaces in diagnostic test mode, the dryer may appear to operate normally during regular use, but the control board cannot accurately regulate heat input without a functioning inlet thermistor.

Diagnosing this fault begins with inspecting wire connections at both the machine control board and the inlet thermistor itself, as loose, corroded, or pinched wiring can mimic a shorted component. If wiring checks out, the thermistor should be tested for proper resistance values. If the thermistor reads out of specification for a short condition, it requires replacement. The machine control board should also be evaluated if a new thermistor does not resolve the fault.

Source: manufacturer service documentation.

Common causes of F-25

  1. 01

    Failed inlet thermistor (internal short)

    Part replacement

    The thermistor itself has failed internally, causing its resistance to collapse and produce an out-of-range signal. Testing the thermistor with a multimeter will reveal a near-zero resistance reading instead of the expected value.

  2. 02

    Loose or damaged wiring at the inlet thermistor

    Wiring / connection

    Wires connecting the thermistor to the control board can become loose, corroded, or pinched, creating a short in the circuit. Visually inspect the connector and wire harness at the thermistor for damage or poor seating.

  3. 03

    Loose or damaged wiring at the machine control board

    Wiring / connection

    The wire harness connection at the machine control board end of the thermistor circuit can loosen over time or develop corrosion. Checking and reseating the connector at the board is part of the first recommended diagnostic step.

  4. 04

    Pinched or chafed wire harness

    Part replacement

    If the thermistor wire harness runs near a sharp edge or moving part, insulation can wear through and cause two conductors to contact each other, creating a short. Tracing the full length of the harness can identify this type of damage.

  5. 05

    Faulty machine control board

    Part replacement

    If the thermistor and all wiring test within specification, the machine control board itself may be misreading the signal due to an internal failure. This is typically the last component evaluated after all other causes are ruled out.

See the test procedure for each cause

Frequently asked questions about F-25

What does F-25 mean on a Maytag dryer?
F-25 on a Maytag electric dryer means the machine control board has detected a short in the inlet thermistor circuit. The inlet thermistor is a temperature sensor that monitors incoming air at the dryer's air intake. This code only appears during the dryer's diagnostic test mode and applies exclusively to electric models. The fault points to either the thermistor itself, the wiring connected to it, or in some cases the control board.
How do I fix the F-25 error code on my Maytag dryer?
Start by checking the wire connections at both the inlet thermistor and the machine control board, as loose or damaged wiring is a common cause. If all connections are secure and undamaged, use a multimeter to test the inlet thermistor's resistance. A shorted thermistor will read near zero ohms and needs to be replaced. If replacing the thermistor does not clear the code, have the machine control board evaluated as well.
Is it safe to use my Maytag dryer when the F-25 code is showing?
Because F-25 only appears in diagnostic test mode and not during normal operation, your dryer may seem to run fine day to day. However, a shorted inlet thermistor means the control board cannot accurately monitor incoming air temperature, which could affect how well the dryer regulates heat. It is best to have the fault diagnosed and repaired before continued regular use to avoid potential overheating concerns.
How much does it cost to repair a Maytag dryer with an F-25 error?
If only the wiring needs to be reseated or repaired, the cost can be minimal. Replacing the inlet thermistor typically falls in the range of $15 to $50 for the part, plus labor if a technician performs the work. If the machine control board is the root cause, board replacement costs generally range from $100 to $300 or more depending on the model. Getting a diagnosis before purchasing parts can help avoid unnecessary expenses.
Will resetting my Maytag dryer clear the F-25 code?
A reset may temporarily clear the code from the display, but it will not resolve the underlying fault. Because F-25 indicates a shorted thermistor or a wiring problem, the code will return when diagnostic test mode is run again if the root cause has not been repaired. Proper diagnosis and repair of the thermistor circuit are needed to permanently clear this fault.

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