Maytag Washer Error Code 70

Error code 70 means the control board has detected an open or short circuit in the heater thermistor. The thermistor is a temperature sensor located near the wash heater, and this fault means its resistance reading is outside the acceptable range. The washer stops the cycle to prevent operating without accurate temperature feedback. Diagnosing the issue starts with checking thermistor resistance and inspecting its wiring connections.

It is not recommended to continue running heated wash cycles while code 70 is active. Without accurate temperature sensing, the control board cannot regulate the heater element properly, which carries a risk of overheating. Cold water cycles may still function, but the underlying fault should be diagnosed and corrected before returning to normal use.

A reset may temporarily clear the error code, but it will return if the underlying thermistor fault has not been corrected. Resetting does not repair a failed thermistor or a damaged wire. If the code reappears after a reset, proceed with resistance testing and connection inspection to identify the root cause before running the machine again.

Yes, a knowledgeable DIYer can often resolve code 70 by inspecting the thermistor connector for looseness or corrosion and re-seating it. If the connector looks fine, use a multimeter to test thermistor resistance across its terminals. A reading that is open or far outside a normal range confirms the thermistor needs to be replaced, which is generally a straightforward swap once the component is located.

If only the thermistor needs replacement, parts typically cost in the range of $15 to $50 depending on the specific model. If a professional technician is needed, labor charges will add to that cost, bringing the total repair estimate to roughly $100 to $200. Control board replacement, if that turns out to be the cause, would increase costs significantly.