The 25E error on your Samsung Washer means the machine’s main control board has lost communication with the motor control unit. This usually points to a wiring, connector, or control board issue rather than a simple wash cycle glitch. In most cases you can check the connections yourself before calling in a repair engineer.

Error code 25E
Meaning Communication failure between the main control board and the motor (drive) control board
Severity Medium — the washer will usually stop mid-cycle and won’t restart until fixed
Time to fix 15–45 minutes
Tools needed Screwdriver, multimeter (optional), torch

What the 25E error means

Samsung washers use two separate boards to run the machine: a main control board that manages the display and settings, and a motor control board that drives the drum. The 25E code appears when these two boards stop talking to each other, usually because of a loose wire, a damaged connector, or a fault in one of the boards themselves.

This is different from Samsung’s oven-style codes such as the Samsung Washer SE Error Code: Causes and Fixes or the Samsung Washer TE Error Code: Causes and Fixes, which relate to sensor and temperature faults rather than board communication.

Common causes

  • Loose or disconnected wiring harness between the main and motor control boards
  • A damaged or corroded connector pin
  • Power supply interruption during a cycle (brownout or unstable mains)
  • Faulty motor control board
  • Faulty main control board
  • Moisture damage to either control board from a leak

How to fix the 25E error

  1. Power cycle the washer. Unplug it for 2–3 minutes, then plug it back in. This clears many temporary communication faults on its own.
  2. Check the wiring harness. Unplug the washer, remove the rear or top panel, and check the wiring between the main control board and the motor control board for loose plugs or frayed wires.
  3. Inspect connectors for damage. Look for bent pins, corrosion, or discolouration on the connectors — these often need cleaning or replacing.
  4. Test for continuity. If you have a multimeter, check the wiring harness for continuity to rule out a broken wire inside the loom.
  5. Reseat both control boards. Remove and reinsert the boards firmly into their sockets to ensure a solid connection.
  6. Replace the faulty board. If the wiring checks out, the main or motor control board itself may need replacing — this is best done by a qualified appliance technician.

FAQ

Can I keep using the washer after a 25E error?
No. The machine won’t complete a cycle reliably until the communication fault between the boards is fixed.

Is 25E covered under warranty?
If your washer is still within Samsung’s warranty period, a control board fault like this is typically covered — check your paperwork or contact Samsung support first.

Does a power cut cause the 25E error?
Yes, a sudden power interruption mid-cycle is one of the most common triggers, and often clears itself with a simple power cycle.