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ErrBase

Samsung Washer 9C2 Error Code: Low Supply Voltage Fault

Quick Answer

9C2 means Samsung's washer detected low voltage at the power supply input. The machine requires 108-132V AC at the outlet. Voltage below that threshold triggers 9C2 because the motor drive cannot generate the correct drive current for the brushless motor.

I usually see this one pop up right when the drum tries to hit high-speed spin, or the second a dishwasher or AC compressor kicks on somewhere else in the house. It's your washer saying the power coming in isn't strong enough to safely run the motor. Ignore it and keep forcing cycles, you risk burning out the inverter board. Fix the power source first before you even think about buying parts.

SamsungWasherSeverity: highDifficulty: advanced80% DIY Success
Time to Fix
30–120 min
Difficulty
advanced
Parts Cost
$200 – $350
Tools Needed
Phillips #2 screwdriver, Torx T20 screwdriver

What Does the 9C2 Code Mean?

Think of 9C2 as your laundry room's brownout detector. Samsung built these machines with really tight voltage tolerances, and even a small dip will freeze the whole cycle. Honestly, most of the time it's an overloaded circuit or a loose outlet connection, not a broken component inside the washer. I've seen this fix itself just by moving the machine to a dedicated circuit with zero parts replaced.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Supply voltage at the outlet below 108V AC40%
Circuit breaker tripping partially (one leg of 240V circuit)24%
Main control board failing and generating a false low-voltage reading22%
Long extension cord creating excessive voltage drop14%

Symptoms You May Notice

  • The 9C2 code flashes right when the drum tries to hit high-speed spin, usually in the 800-1000 RPM range where motor current demand peaks sharply.
  • Machine fills with water, starts agitating normally, then stops dead mid-cycle with the door locked and won't continue no matter how many times you press Start.
  • Works perfectly early in the morning when the house is quiet but throws 9C2 every afternoon when the AC, dishwasher, or dryer is also pulling from the panel.
  • Drum won't tumble at all on startup, just sits there displaying the code with the door locked.
  • Completely intermittent failures where it runs a full cycle fine three times in a row, then dies at the exact same point on the fourth.

Can you reset a Samsung washer to clear the 9C2 code?

Unplug the washer from the wall outlet. Press and hold the Start/Pause button for five seconds to bleed off any charge sitting in the capacitors. Wait a full 60 seconds before plugging back in. When power comes back on the display should cycle through startup and clear the code. But honestly, if your outlet is only putting out 105V, it's coming right back the second the motor tries to spin up.

Tools Required for Diagnosis

Phillips #2 screwdriverTorx T20 screwdriverDigital multimeter with AC voltage rangePlug-in outlet voltage meter (optional but great for load testing without probes)12-gauge 20-amp rated extension cord (for circuit isolation test only, not permanent use)

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

ComponentComponent Under Test
Expected Range108–132 VAC
ConditionIf Open (OL) or infinite, replace component.

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name
Main Control BoardDC92-01803A · $200–$350

Frequently Asked Questions

What's the difference between 9C2 and 9C8 on a Samsung washer?
Both involve power supply issues but they're pointing at different things. 9C2 is about voltage, basically the pressure of the electricity coming in is too low for the motor to spin safely. 9C8 is about frequency. In the US our power cycles at 60Hz and if that's off, usually because of a generator or a really noisy electrical environment, you get 9C8 instead. Both errors usually start with checking your home's electrical panel, but 9C8 is more likely if you're running on a generator during an outage.
Can a partially tripped breaker cause 9C2?
Yeah, definitely. A weak or soft breaker with pitted internal contacts might let enough voltage through for the display and fill cycle to work fine, but the second the motor demands real current during spin, the connection can't deliver and voltage sags hard enough to trigger the error. Flip the breaker all the way off, wait five seconds, then snap it firmly back on to make sure the contacts are fully seated. If the breaker feels spongy or doesn't click cleanly, replace it. That's a $15 breaker fix, not a washer fix.
How much does it cost to fix a 9C2 error?
Depends on where the problem is. Extension cord? Free. Dedicated 20-amp circuit installed by an electrician? Probably $200-400 depending on your area and how far the panel is from the laundry room. The main control board DC92-01803A runs $120-180 for the part, plus $100-150 labor if you're hiring it out. Worst-case all-in you're looking at around $300-350 to fix the machine, which beats buying a new one by a wide margin. Most of the time though it's the circuit, not the board.
My washer is brand new and already showing 9C2. Is it defective?
Probably not the washer. New installs throw this code all the time because the laundry room wasn't wired properly. Samsung's spec is a dedicated 20-amp, 120V circuit. If you're sharing that outlet with anything else, or if the electrician who built the house ran 14-gauge wire on a 20-amp breaker, you'll get 9C2 right out of the box. Test the outlet voltage under load first. If it's holding solid at 120V on a dedicated circuit, then yeah, call Samsung warranty. But check the wiring before you make that call.
What voltage reading should I see on my multimeter at the outlet?
You want 108V to 132V AC while the machine is actively running a spin cycle. Idle voltage doesn't tell you much, it's the voltage under motor load that counts. Under 108V and the inverter can't drive the motor safely. If you see anything below 110V while the drum is trying to spin up, that's your problem right there. Over 132V is also technically a fault but it's pretty rare in normal residential wiring unless you're in a neighborhood with known overvoltage issues.

Related Samsung Washer Error Codes

Code: 9C8Samsung Washer 9C8 Error Code: Power Frequency FaultCode: AC6Samsung Washer AC6 Error Code: Motor Communication Fault

Same Fix Works on These Brands

Samsung shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

Samsung washerSamsung Washer 3C2 Error Code: Motor StallSamsung washerSamsung Washer 3E Error Code: Motor FaultSamsung washerSamsung Washer 4E Error Code: Water Supply Fault (Top Load)Samsung washerSamsung Washer 5C Error Code: Drain Error (Older Display)Samsung washerSamsung Washer 8C Error Code: Vibration Sensor FaultSamsung washerSamsung Washer 8E Error Code: Motor Frequency Sensor Fault

Models Known to Experience 9C2 Errors

This repair applies to most Samsung washers with this error code. Common model numbers include:

WF45R6100AW, WF45T6000AW, WF45R6300AW, WF50R8500AV, WF45H5200AW, WF56H9100AG, WF45K6500AW, WF45H5400AW

MS

Written by

Mike Sullivan

Lead Appliance Repair Technician · 20 years experience

Last verified for technical accuracy on March 14, 2026