LG Washing Machine Error Code PF

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 11, 2026

✓ Low Severity 🔧 Easy DIY

Power failure — the cycle was interrupted by a loss of power

The most common cause of the PF error on a LG washing machine is genuine household power interruption (~60% of cases); start with: clear and rerun.

💰 DIY cost: $0–$0 👨‍🔧 Pro cost: $100–$200 Save $100+ by doing it yourself

LG Washing Machine error code PF on the display panel — How the PF code appears on a LG washing machine display

What Does Error Code PF Mean on a LG Washing Machine?

Power failure — the cycle was interrupted by a loss of power.

PF is a power-failure flag, not a component fault. The control board tracks whether a cycle completed; if supply voltage drops below a working threshold or cuts out entirely mid-cycle, the board records the interruption and displays PF once power returns so you know the wash never finished. Unlike OE (drain) or UE (unbalanced load), PF points to the incoming power path — outlet, cord, breaker, or line filter — rather than a mechanical or plumbing problem inside the machine.

Models affected: Most LG top-load and front-load washers with digital displays, including models such as WM3900HWA, WM4000HBA, WM3400CW, WT7300CW, WM8100HVA, WM4500HBA, and WT7900HBA

What owners report: Owners commonly report PF after storms, brief outages, or breaker trips, and a single occurrence usually clears by simply restarting the cycle. When PF keeps returning without any known outage, many trace it to a loose plug, a shared or overloaded circuit, or an outlet that trips during the high-draw spin phase.

What Causes Error Code PF?

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

1

Genuine household power interruption 60% of cases
2

Loose plug or worn outlet 20% of cases
3

Tripping breaker / shared circuit overload 15% of cases
4

Failing line filter or power cord 5% of cases

How to Fix LG Washing Machine Error Code PF

🔧 Easy DIY Est. time: 10–20 min

⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.

1

Clear and rerun

Press Power, select a cycle, and restart — or use Rinse+Spin if the load was nearly done.
2

Check the plug and outlet

Make sure the plug seats firmly and the outlet isn't loose or heat-discolored. Move the washer to its own outlet if it shares one.
3

Watch for a pattern

If PF appears during spin specifically, the motor's current draw may be tripping a weak breaker — have the circuit checked.

How to Reset Error Code PF

Press Power off and back on, reselect the cycle, and press Start. PF clears as soon as a new cycle begins.

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

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

Did this guide fix your appliance?

When to Call a Professional

Recurring PF with no household outages deserves an electrician's look at the outlet and breaker before suspecting the washer's control board.

Average professional repair cost for this issue: $100–$200

Related Error Codes

Drainage error — water not draining within expected time

⚠ High Severity

Unbalanced load — cannot complete spin cycle

✓ Low Severity

Same Code on Other Brands

Error code PF appears on these other brands too. See every brand that shows PF →

Whirlpool Washing Machine PF

Power failure — a power interruption stopped the cycle

Whirlpool Dryer PF

Power failure — a power interruption stopped the cycle

GE Appliances Dishwasher PF

Power failure — cycle interrupted by power outage

GE Appliances Refrigerator PF

Power failure — power to the refrigerator was interrupted

Find Replacement Parts

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

🔩

Search PartSelect

LG Washing Machine repair parts

🔧

Search RepairClinic

Step-by-step video guides

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

More LG Washing Machine Error Codes

IE Water inlet error — water not filling within expected time LE Motor locked — hall sensor or stator fault dE Door open or door lock failure tCL Tub clean reminder — drum needs cleaning FE Water overflow error — drum overfilling HE Heater error — water heater circuit fault

Frequently Asked Questions

Can I keep using my LG Washing Machine when error PF appears? +

Usually yes — PF is a low-severity power notice that rarely stops the washing machine from working, but clearing the underlying cause prevents it from escalating.

What most commonly causes PF on a LG Washing Machine? +

Across reported LG washing machine repairs, the most frequent is genuine household power interruption (60% of cases), loose plug or worn outlet (20%), then tripping breaker / shared circuit overload (15%). Check them in that order before replacing any parts.

PF keeps coming back after a reset — what should I check next? +

A reset only clears the stored PF fault; if it returns, the power problem is still present. Move on to the physical checks — clear and rerun, then check the plug and outlet — 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 LG Washing Machine error PF? +

A DIY repair typically runs $0–$0 in parts, versus $100–$200 for a professional service call, so handling it yourself saves around $100. Expect the work to take about 10–20 minutes.

Which LG Washing Machine models show error PF? +

PF is documented on Most LG top-load and front-load washers with digital displays, including models such as WM3900HWA, WM4000HBA, WM3400CW, WT7300CW, WM8100HVA, WM4500HBA, and WT7900HBA. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

• LG Support — Help Library — official manufacturer documentation
• Our editorial & verification policy

Content verified against manufacturer service documentation. Last verified: June 11, 2026.

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