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Error code reference

Frigidaire Dryer Error Code E25

Control NTC open circuit

Frigidaire codesFrigidaire dryer codes

Control NTC open circuit — the control thermistor or its wiring is open.

First step from the service manual

Remove wires from control thermistor. Measure resistance of thermistor. If reading is not 50K ohms (±10%), replace thermistor. If reading is within 50K (±10%), check wiring between thermistor and electronic control. If good, replace electronic control.

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

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What E25 means on a Frigidaire dryer

The E25 error code on a Frigidaire dryer indicates an open circuit condition in the control NTC (Negative Temperature Coefficient) thermistor circuit. The control thermistor is a temperature-sensing component that provides real-time temperature data to the electronic control board. An NTC thermistor changes its resistance in response to temperature, and at room temperature the control thermistor on these units should measure approximately 50,000 ohms (50K ohms), within a tolerance of plus or minus 10 percent. When the control board detects that the thermistor circuit is open, meaning no valid resistance reading is present, it throws the E25 code and typically halts normal dryer operation.

The most direct cause is a failed thermistor whose internal resistance element has broken, creating an open circuit. However, the wiring harness between the thermistor and the electronic control board is equally suspect, since a broken wire, a corroded connector, or a loose terminal can produce the same open-circuit condition. Because the diagnostic procedure calls for disconnecting the thermistor and measuring its resistance directly, technicians can isolate the fault to either the thermistor itself or the wiring before condemning the control board.

If the thermistor reads 50K ohms within the 10 percent tolerance at ambient temperature, the component is functioning correctly and the fault lies in the wiring or, as a last resort, the electronic control board itself. Wiring issues in this circuit are often found at connector terminals that have backed out, corroded due to moisture exposure, or been damaged by heat over time. The electronic control board is replaced only after both the thermistor resistance and all wiring continuity have been confirmed as within specification.

Source: manufacturer service documentation.

Common causes of E25

  1. 01

    Failed control thermistor

    Part replacement

    The thermistor's internal resistance element has broken open, causing an infinite resistance reading instead of the expected 50K ohms at room temperature. Disconnect the thermistor and measure its resistance directly to confirm this.

  2. 02

    Broken or disconnected wiring in the thermistor circuit

    Wiring / connection

    A wire in the harness between the thermistor and the electronic control board may have broken, come loose from a terminal, or lost continuity due to physical damage. Inspect the full length of the wiring and check all connectors for secure seating.

  3. 03

    Corroded or damaged connector terminals

    Wiring / connection

    Moisture or heat exposure over time can corrode the connector terminals at either the thermistor end or the control board end, increasing resistance to the point of an open-circuit reading. Visually inspect terminals and test for continuity.

  4. 04

    Faulty electronic control board

    Part replacement

    If the thermistor resistance measures within 50K ohms plus or minus 10 percent and all wiring checks out as good, the electronic control board may be unable to correctly read the thermistor signal due to an internal board fault. This is the least likely cause and should only be diagnosed after ruling out the thermistor and wiring.

See the test procedure for each cause

Frequently asked questions about E25

What does E25 mean on a Frigidaire dryer?
E25 means the control board has detected an open circuit in the control NTC thermistor circuit. The control thermistor is a temperature sensor that should measure approximately 50K ohms at room temperature. When the circuit is open and no valid signal reaches the control board, the dryer displays E25 and stops operating normally. The fault can be in the thermistor itself or in the wiring connecting it to the control board.
Can I fix the E25 error code myself?
A knowledgeable DIYer can diagnose and sometimes fix E25 by using a multimeter to measure the control thermistor's resistance after disconnecting its wires. If the reading is not within 50K ohms plus or minus 10 percent, replacing the thermistor is a straightforward repair. If the thermistor tests correctly, tracing and repairing wiring issues requires more experience and the ability to safely access internal dryer components with the unit unplugged.
Is it safe to keep using my dryer with an E25 code?
No, you should not continue operating the dryer while E25 is active. The control thermistor provides temperature feedback that the control board uses to regulate drying cycles safely. Without a valid signal from this sensor, the dryer cannot properly monitor heat, which creates a potential overheating risk. Resolve the fault before resuming use.
How much does it cost to repair a Frigidaire dryer showing E25?
If only the control thermistor needs replacement, parts typically cost in the range of $15 to $50 depending on the specific model, making it one of the more affordable dryer repairs. If the fault turns out to be a wiring issue, cost depends on labor time to locate and repair the break. In the less common scenario where the electronic control board is at fault, board replacement can range from $100 to $250 or more for parts alone, plus any applicable labor costs.
Will resetting my Frigidaire dryer clear the E25 error code?
Resetting the dryer by unplugging it for a few minutes may temporarily clear the E25 code, but the error will return as soon as the control board checks the thermistor circuit again if the underlying fault has not been repaired. A reset does not fix a failed thermistor, broken wire, or damaged connector. The only way to permanently clear E25 is to identify and correct the actual open-circuit fault in the thermistor circuit.

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