Samsung Washer 1E Error Code: Causes and Fixes

The 1E error on your Samsung Washer means the machine has detected a fault with the water temperature sensor (thermistor). The control board isn’t receiving a valid signal from the sensor, so it stops the cycle to avoid heating water to the wrong temperature. In most cases this is a wiring or sensor issue that a homeowner can check safely.

What the 1E error means

The 1E code points to a breakdown in communication between the water temperature sensor and the main control board. This sensor tells the washer how hot the water is so it can heat it to the correct level for the selected cycle. When the signal is missing, inconsistent, or out of range, the control board flags the 1E error and pauses the wash to prevent damage or unsafe operation.

This is similar in nature to sensor-related faults seen on other Samsung appliances, such as the Samsung Washer SE Error Code, where a component isn’t communicating correctly with the control board.

Common causes

• Loose or disconnected wiring harness at the temperature sensor
• Faulty or failed water temperature sensor (thermistor)
• Corroded or damaged connector pins
• Water damage or moisture inside the wiring connector
• Main control board failure (less common)
• A pinched or worn wire rubbing against the drum or frame

How to fix the 1E error

1. Power cycle the washer — Unplug the machine for 60 seconds, then plug it back in. This clears temporary faults and resets the control board.
2. Check the wiring harness — Unplug the washer, remove the back or top panel, and inspect the wires running to the temperature sensor for looseness, corrosion, or damage.
3. Test the sensor with a multimeter — Disconnect the sensor and check its resistance against the manufacturer’s spec chart. A reading of zero or infinite resistance means it needs replacing.
4. Reseat all connectors — Firmly reconnect the sensor plug and any nearby connectors to rule out a loose connection.
5. Replace the temperature sensor — If the sensor fails the resistance test, order a genuine replacement part and swap it in following your model’s service manual.
6. Call a technician — If the sensor and wiring both check out fine, the fault likely lies with the main control board, which requires professional diagnosis.

FAQ

Can I still use my washer with a 1E error?
It’s best not to. The washer may not heat water correctly, which can affect wash quality and, in rare cases, cause damage to the motor or heater.

Will unplugging the washer fix the 1E error permanently?
Sometimes, if the cause was a temporary glitch. If the error returns after a reset, the sensor or wiring likely needs attention.

Is the temperature sensor expensive to replace?
Replacement sensors are generally inexpensive, though labour costs can add up if you hire a technician. Many homeowners can replace it themselves with basic tools.