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Samsung Washing Machine Error Code 9C1

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: July 19, 2026
⚠ Medium Severity 🔧 Easy DIY Also shown as: 9C, 2E

Power supply error — abnormal/low line voltage detected

The most common cause of the 9C1 error on a Samsung washing machine is low or unstable house voltage (~40% of cases); start with: plug directly into the wall.

💰 DIY cost: $0–$0 👨‍🔧 Pro cost: $120–$250 Save $120+ by doing it yourself
Samsung Washing Machine error code 9C1 on the display panel
How the 9C1 code appears on a Samsung washing machine display

What Does Error Code 9C1 Mean on a Samsung Washing Machine?

Power supply error — abnormal/low line voltage detected.

The control board continuously samples the incoming AC line voltage and expects it to stay within a defined window (near 120V, or ~240V on applicable models). When it reads voltage that is too low, unstable, or sagging under load — often from a brown-out, undersized extension cord, or a loose outlet — it throws 9C1 and stops the cycle to protect the motor and electronics. Unlike a hard component-failure code, this points at the power feeding the machine rather than an internal part.

Models affected: Samsung front-load and top-load washers with electronic control boards that monitor incoming line voltage; the code appears across recent series regardless of specific model.
What owners report: Owners commonly report this appearing when the washer is run through a power strip or long extension cord, or during periods of unstable household power. A frequent quick win is simply plugging directly into a grounded wall outlet and power cycling, which often clears it if the outlet itself is sound.

What Causes Error Code 9C1?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Low or unstable house voltage 40% of cases
  2. 2
    Extension cord or power strip in use 25% of cases
  3. 3
    Loose/worn wall outlet 20% of cases
  4. 4
    Control board voltage sensing fault 15% of cases

How to Fix Samsung Washing Machine Error Code 9C1

🔧 Easy DIY Est. time: 10–20 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Plug directly into the wall

    Remove any extension cord or power strip — plug the washer straight into a dedicated grounded outlet.

  2. 2

    Power cycle

    Unplug for 5 minutes, then restart.

  3. 3

    Check outlet voltage

    Have an electrician confirm a steady ~120V (or ~240V where applicable) at the outlet under load.

How to Reset Error Code 9C1

Plug directly into a wall outlet (no extension cord), power cycle, and restart.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full Samsung washer reset guide → Enter diagnostic mode → Symptom guide: Washer won't start →

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When to Call a Professional

If voltage at the outlet is confirmed correct but 9C1 persists, the control board's voltage-sensing circuit has failed.

Average professional repair cost for this issue: $120–$250

Related Error Codes

AE
Communication error — main and sub control boards not talking
⚠ Medium Severity

Find Replacement Parts

Use these links to find the exact replacement parts for your Samsung Washing Machine:

🔩
Search PartSelect
Samsung Washing Machine repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More Samsung Washing Machine Error Codes

4C Water supply not detected UE Unbalanced load detected OE Drain failure — water not draining LE Motor locked — drum cannot rotate DE Door not properly closed or door lock failure HE Water heater error — water not heating to target temperature

Frequently Asked Questions

Can I keep using my Samsung Washing Machine when error 9C1 appears? +
You often can for a cycle or two, but the power issue behind 9C1 will keep interrupting normal operation until it is fixed. Plan the repair rather than ignoring the code.
What most commonly causes 9C1 on a Samsung Washing Machine? +
Across reported Samsung washing machine repairs, the most frequent is low or unstable house voltage (40% of cases), extension cord or power strip in use (25%), then loose/worn wall outlet (20%). Check them in that order before replacing any parts.
9C1 keeps coming back after a reset — what should I check next? +
A reset only clears the stored 9C1 fault; if it returns, the power problem is still present. Move on to the physical checks — plug directly into the wall, then power cycle — since the code will reappear until the root cause is resolved. This is a beginner-friendly job needing only basic hand tools.
How much does it cost to fix Samsung Washing Machine error 9C1? +
A DIY repair typically runs $0–$0 in parts, versus $120–$250 for a professional service call, so handling it yourself saves around $120. Expect the work to take about 10–20 minutes.
Which Samsung Washing Machine models show error 9C1? +
9C1 is documented on Samsung front-load and top-load washers with electronic control boards that monitor incoming line voltage; the code appears across recent series regardless of specific model.. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: July 19, 2026.

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