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Error code reference

Frigidaire Washer Error Code E71

NTC failure

Frigidaire codesFrigidaire washer codes

NTC failure — NTC open circuit; wiring fault; main board fault.

First step from the service manual

Check NTC impedance at room temperature (should be 50K ohms at 25°C ±5%). If invalid, replace NTC. If okay, check wiring (fastons on NTC harness and wiring/edge connector J4). If okay, replace electronic control board.

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 Frigidaire washer

The E71 error code on a Frigidaire washer indicates a failure in the NTC (Negative Temperature Coefficient) thermistor circuit. The NTC thermistor is a resistive temperature sensor responsible for monitoring water temperature during wash cycles. When the electronic control board detects an open circuit condition in the NTC loop, it triggers E71 and typically halts operation to prevent running cycles at uncontrolled temperatures. An open circuit means the board is reading no continuity through the thermistor circuit at all, which is distinct from a simple out-of-range reading.

The NTC thermistor has a known resistance specification: at 25 degrees Celsius (room temperature), it should measure approximately 50K ohms, within plus or minus 5 percent of that value. A reading that is significantly higher, infinite, or absent entirely confirms the thermistor itself has failed internally. However, wiring faults are equally common culprits. The connector fastons on the NTC harness can corrode, back out, or develop high resistance over time, and the wiring path through edge connector J4 is a known inspection point for this fault.

If both the NTC resistance and the wiring harness check out correctly, the fault source shifts to the electronic control board itself. The board interprets the thermistor signal and may develop internal faults in that input circuit. Because the diagnostic path is sequential, technicians should confirm thermistor resistance first, then inspect all connector points along the J4 path, before condemning and replacing the control board.

Source: manufacturer service documentation.

Common causes of E71

  1. 01

    Failed NTC thermistor

    Part replacement

    The thermistor itself has developed an internal open circuit and no longer conducts. At room temperature it should measure approximately 50K ohms; a reading that is infinite or absent confirms the part has failed and needs replacement.

  2. 02

    Loose or corroded NTC harness connectors (fastons)

    Wiring / connection

    The push-on faston connectors at the thermistor terminals are a common point of failure due to vibration and moisture exposure. Inspect each faston for corrosion, looseness, or physical damage and reseat or replace as needed.

  3. 03

    Wiring fault at edge connector J4

    Wiring / connection

    The wiring harness between the NTC sensor and the control board passes through edge connector J4. A broken wire, pinched insulation, or poor connection at this point can create an open circuit that mimics a bad thermistor.

  4. 04

    Faulty electronic control board

    Part replacement

    If the thermistor resistance is within spec and all wiring and connectors check out, the control board's NTC input circuit may have failed internally. This is the least common cause and should only be suspected after ruling out the sensor and wiring.

See the test procedure for each cause

Frequently asked questions about E71

What does E71 mean on a Frigidaire washer?
E71 indicates an NTC thermistor open circuit fault. The NTC is the water temperature sensor, and the control board has detected that the sensor circuit is not completing properly. This could be caused by a failed thermistor, a wiring connection problem, or a faulty control board. The washer stops operation until the fault is resolved.
Can I fix the E71 error myself?
Some E71 repairs are within reach for a knowledgeable DIYer. Inspecting and reseating the harness connectors at the thermistor and at edge connector J4 requires no special tools and costs nothing. Testing NTC resistance with a multimeter at room temperature, where the reading should be approximately 50K ohms, is also straightforward. If the thermistor or control board needs replacement, the difficulty increases depending on part accessibility on your specific model.
Is it safe to run my washer with an E71 error?
Running the washer while E71 is active is not recommended. Without a functioning temperature sensor, the control board cannot properly regulate water temperature, which could lead to wash cycles running at incorrect temperatures and potentially damaging clothing or failing to clean properly. The washer is designed to halt operation under this fault for that reason.
How much does it cost to repair an E71 error on a Frigidaire washer?
Repair cost depends on the root cause. An NTC thermistor is generally an inexpensive part, typically in the range of $10 to $40. If the control board is at fault, that part typically runs between $100 and $250 or more depending on the model. Adding professional labor costs can bring total repair bills to anywhere from $80 to $350 or higher depending on your location and service provider.
Will resetting my Frigidaire washer clear the E71 error?
A power reset may temporarily clear the error code from the display, but if the underlying fault in the thermistor circuit still exists, the code will return once the washer attempts to run a cycle and checks the sensor again. A reset alone is not a fix. The thermistor, wiring, and connector J4 should all be physically inspected and tested before assuming the problem is resolved.

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