---
title: "Automatic Cycles Stop Early, Timed Cycles Are Fine. That Is the Sensor"
description: "An Electrolux dryer stopping before clothes are dry on automatic cycles while timed cycles work is the moisture sensor. Usually a film of softener, and free to fix."
url: "https://electroluxmiami.support/blog/automatic-dryer-cycles-that-stop-early/"
date_modified: "2026-09-11"
Category: "Common Problems"
---


# Automatic Cycles Stop Early, Timed Cycles Are Fine. That Is the Sensor

An Electrolux dryer that stops before clothes are dry, but only on the automatic cycles, has told you which part it is before you have opened anything.

## What an automatic cycle actually measures

Not time. Not temperature. **Conductivity.**

Damp fabric conducts electricity; dry fabric does not. Two small metal strips sit inside the drum opening, and as laundry tumbles past it briefly bridges them. The control watches how the resistance across that gap changes over the cycle, and when the readings say dry, it stops.

That is a genuinely good design. It is also entirely dependent on those two strips being able to read what touches them.

## Which is why fabric softener defeats it

Softener and dryer sheets leave a film on everything inside the drum, including the strips. The film insulates them. The resistance reads high. The machine concludes — correctly, from its own point of view — that the load is dry, and stops.

Nothing has failed. The sensor is reading exactly what it is being given.

## The fix takes a minute

Find the two metal bars inside the drum opening — they are usually on the front bulkhead, low down, a few inches apart. Wipe both with a cloth and a little rubbing alcohol until they are bare metal again.

Then run an automatic cycle with a normal-sized load and see whether it stops at the right point. That test tells you more than any measurement will.

## What the maker says, and why it is worth reading

This is one of the more generous entries in this maker's whole code list. E 4 is published as *humidity sensor failed* — and then: *your dryer will complete the current cycle and you can still operate manual cycles. If the error code continues, schedule service.*

In other words, the machine keeps working. What you have lost is a feature, not a dryer. Timed cycles behave exactly as they always did, and using them is a perfectly reasonable way to carry on while you decide what to do.

That is also the fact worth mentioning when you book. "Automatic cycles are wrong and timed cycles are fine" narrows this to one part before a technician leaves the van.

## The version that is not the sensor

**A very small load.** One or two items tumbling can miss the strips entirely, so the control never gets a reading. It is not a failure and it explains complaints that come and go.

**Everything wrong, timed cycles included.** Then this is not the sensor. That is heat and airflow, and it belongs with the duct rather than here.

**Over-drying rather than under-drying.** Same sensor, opposite reading — usually a harness or a connection rather than a film, and worth booking rather than living with. Clothes cooked dry are wearing out faster than they need to.

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