Frigidaire Washer Error E70 — What It Means & How to Fix It

What Does This Error Mean?

Error E70 means the washer cannot read the incoming water temperature. The NTC temperature sensor (thermistor) has failed or is disconnected. The washer will halt until the sensor issue is fixed.

Affected Models

FFFW5000QW
FFTW4120SW
FFFW5000QW0
ATF6000FS
FAHE1011MW

Common Causes

Failed or burned-out NTC temperature sensor
Loose or corroded wiring connector on the temperature sensor
Water inlet valve not opening, causing no water to reach the sensor
Control board fault misreading sensor signals
Limescale buildup coating the sensor probe and throwing off readings

How to Fix It

Unplug the washer for 5 minutes and then plug it back in.

A power reset can clear a temporary sensor communication error.
Run a test cycle and listen — confirm water is actually entering the tub.

If no water enters, the inlet valve may be the real problem, not the sensor.
Locate the NTC temperature sensor — it sits on the water inlet or inside the drum area.

Check your model's service manual for the exact sensor location.
Inspect the wiring harness connector on the sensor for loose pins or corrosion.

Reseating a loose connector often fixes E70 without any parts replacement.
Test the sensor with a multimeter — resistance changes with temperature.

At room temperature, a healthy NTC thermistor typically reads around 10,000 ohms.
Replace the temperature sensor if it tests open or shorted.

Use a Frigidaire OEM replacement thermistor matched to your model number.

When to Call a Professional

Contact a technician if replacing the thermistor does not clear the E70 code. Control board replacements can cost $200–$400 including labor. If the fix is a loose wire or the sensor itself, most people can DIY this repair.

Frequently Asked Questions

Will E70 damage my clothes if I ignore it?

The washer stops the cycle when E70 appears, so it will not run. You cannot accidentally wash in the wrong temperature — it simply will not start. Fix the sensor to resume normal washing.

How much does a Frigidaire washer thermistor cost?

The thermistor part typically costs $15–$40 depending on the model. Replacing it yourself takes about 30 minutes with basic tools. A service call adds $100–$200 in labor on top of the part price.

Can limescale cause E70 on my Frigidaire washer?

Yes — heavy limescale deposits can coat the sensor probe. This insulates the probe and causes inaccurate or missing temperature readings. Descaling the washer with citric acid or white vinegar may help before replacing parts.