Samsung Washer Error Code 9C2 — High Voltage Detected
What this means
The 9C2 error code indicates the control board's voltage monitoring circuit has detected incoming voltage that exceeds the safe operating range. This can be caused by a power surge, a failing neutral connection in your home wiring, or an electrical panel issue. High voltage can damage the control board and other electronic components in the washer.
Alternate codes: 9E2
Step-by-step fix
4 stepsUnplug the washer immediately
If high voltage is detected, unplug the washer to prevent damage to the control board. Wait 5 minutes before proceeding.
Do not continue trying to start cycles with this error — high voltage can permanently damage electronic components.
Test the outlet voltage
Using a multimeter set to AC voltage, test the outlet. You should read between 110V and 125V for a standard 120V washer outlet. Readings above 130V are abnormally high.
Test at different times of day. Voltage can fluctuate, especially if you have a failing transformer on your utility pole.
Check other outlets in the home
Test other outlets to see if the high voltage is isolated to the washer circuit or affects the whole house. If all outlets are high, contact your electric utility company.
A failing neutral connection at the utility meter can cause voltages to spike above 130V on some circuits — this is a utility-side issue.
Plug in and test after voltage normalizes
If the voltage was temporarily high (due to a utility issue), wait until it normalizes, then plug the washer back in and run a test cycle. If the code does not return, the issue was the power supply, not the washer.
Consider installing a surge protector rated for appliances to protect against future voltage spikes.
When to call a professional
If outlet voltage is normal but the error persists, the washer's control board voltage sensing circuit may be damaged (possibly from a previous surge). A technician should test the board.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Main Control Board
Part #DC92-01021B · $120–$250
Only if voltage is normal but error persists (board damaged by previous surge)
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