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Error code reference

Electrolux Washer Error Code E70

NTC defective

Electrolux codesElectrolux washer codes

NTC defective – NTC interruption or short circuit detected (cut or short-circuit on thermistance circuit).

First step from the service manual

Replace NTC, replace electronic, replace cable.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What E70 means on a Electrolux washer

The E70 error code on an Electrolux washer indicates a fault in the NTC (Negative Temperature Coefficient) thermistor circuit. The NTC thermistor is a temperature-sensing resistor responsible for monitoring water temperature during the wash cycle. The control board uses resistance readings from this thermistor to regulate heating and ensure the correct wash temperature is achieved. When the board detects either an open circuit (interruption) or a short circuit in the thermistor circuit, it halts operation and triggers the E70 fault.

The fault can originate from three main areas: the NTC thermistor itself, the wiring harness connecting it to the control board, or the electronic control board. A failed thermistor will typically read either infinite resistance (open/cut) or near-zero resistance (short circuit), both of which fall outside the normal operating range the board expects. Wiring issues such as a broken wire, corroded connector, or pinched harness can mimic a thermistor failure by interrupting or shorting the signal path before it reaches the board.

Diagnosis should proceed in a logical sequence. First, inspect the thermistor wiring and connector for visible damage, corrosion, or loose pins. Then test the NTC thermistor resistance with a multimeter, comparing the reading against the expected value at room temperature. If the wiring and thermistor both test within spec, the control board may be misreading the signal and could require replacement. Addressing each component in order helps avoid unnecessary parts replacement.

Source: manufacturer service documentation.

Common causes of E70

  1. 01

    Failed NTC thermistor

    Part replacement

    The thermistor itself has failed internally, producing either an open circuit or a short circuit reading that the control board cannot interpret as a valid temperature. Testing with a multimeter will show resistance outside the expected range.

  2. 02

    Damaged or broken wiring harness

    Part replacement

    The wire harness running from the NTC thermistor to the control board may have a cut, break, or corroded connector that interrupts or shorts the signal. Visually inspect the harness for pinching, chafing, or burnt areas near the heating assembly.

  3. 03

    Loose or corroded connector

    Wiring / connection

    Connectors at either the thermistor end or the control board end can loosen over time or corrode, causing an intermittent or permanent fault. Unplugging and reseating the connectors, and inspecting the pins for oxidation, may resolve the issue.

  4. 04

    Faulty electronic control board

    Part replacement

    If the thermistor and wiring both test correctly, the control board may have a failed input circuit that is incorrectly detecting an interruption or short. This is the least common cause and should be diagnosed only after the thermistor and wiring are ruled out.

See the test procedure for each cause

Frequently asked questions about E70

What does E70 mean on a Electrolux washer?
The E70 code indicates the control board has detected a fault in the NTC thermistor circuit, either an open circuit (interruption) or a short circuit. The NTC thermistor is the temperature sensor that monitors water temperature during the wash cycle. The fault can be caused by a defective thermistor, damaged wiring, or a faulty control board. The washer stops operation when this code appears to prevent incorrect heating.
Can I fix the E70 error myself?
A knowledgeable DIYer can attempt to diagnose E70 by inspecting the thermistor wiring harness and connectors for visible damage and testing the thermistor resistance with a multimeter. If the thermistor is confirmed faulty, replacing it is a relatively straightforward repair. However, if the issue involves the control board, that repair is more complex and may be better handled by a qualified technician.
Will resetting my Electrolux washer clear the E70 error?
A reset may temporarily clear the E70 code, but if the underlying fault in the thermistor circuit still exists, the error will return once the washer attempts to monitor water temperature again. A reset alone is not a fix. The thermistor, wiring, and control board need to be properly diagnosed and any defective component replaced before the error will clear permanently.
Is it safe to use my Electrolux washer when E70 is showing?
It is not recommended to continue using the washer while E70 is active. Because the temperature sensor is not functioning correctly, the machine cannot reliably regulate water temperature, which could result in improper washing or potential overheating of the water. The washer will typically stop operation on its own when this code is triggered, and the fault should be resolved before resuming use.
How much does it cost to repair an E70 error on an Electrolux washer?
Repair costs vary depending on the faulty component. Replacing an NTC thermistor is generally the least expensive repair, with parts typically ranging from $15 to $50 and modest labor costs. A wiring harness repair or replacement adds some labor time. Replacing the electronic control board is the most costly scenario, with parts and labor potentially ranging from $150 to $400 or more depending on the model and service provider.

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