Electrolux Dishwasher Error Code i70

The i70 code means the control board detected a voltage reading from the NTC thermistor that is outside the acceptable range of 0.04V to 4.7V. This check happens within 10 seconds of starting a program. Because the temperature sensor reading is unreliable, the dishwasher disables the heater and continues the cycle without heating. The root cause is usually a failed thermistor, a loose connector, or damaged wiring.

A power reset may temporarily clear the i70 code, but if the underlying fault in the thermistor or wiring is still present, the error will return within 10 seconds of starting the next cycle. A reset alone does not fix the problem. The fault must be diagnosed and the defective component repaired or replaced for the error to stay cleared.

Repair costs depend on the failed component. A replacement NTC thermistor is generally an inexpensive part, often in the range of $10 to $40, making it one of the more affordable dishwasher repairs if you do it yourself. Professional labor adds $75 to $150 or more depending on your location. If the control board is at fault, total repair costs including parts and labor can range from $150 to $350 or higher.

Some causes of the i70 error are DIY-friendly. Start by checking that the thermistor wiring connectors are fully seated at both the sensor end and the control board end. You can also test the thermistor's resistance with a multimeter to determine if the sensor itself has failed. If the thermistor needs replacement, it is generally a straightforward part swap for someone comfortable working inside a dishwasher. Control board faults are more complex and may warrant a professional technician.

The dishwasher is designed to continue running with i70 active, but without the heating element engaged. This means water will not reach proper wash temperatures, dishes will not be sanitized, and drying performance will be poor. There is no immediate safety hazard from running the machine in this state, but hygiene concerns from inadequately heated water mean the fault should be repaired promptly.