Step-by-Step DIY Fix Guide
- SAFETY: No electrical hazard. PF is an informational code.
- Press the Clear/Off button to dismiss the PF alert.
- Reset the clock — press the Clock button, enter the correct time, and confirm.
- Restart the cooking cycle if needed.
- If PF appears repeatedly without an obvious power outage, confirm the range is plugged directly into a 240V wall outlet (not an extension cord) and that the outlet is stable.
If the door warning comes back
- If the door closes normally but the warning keeps returning, the latch or switch path becomes more likely than a simple alignment issue.
- PF appears repeatedly across multiple days with no household power outages
What This Error Means
Error PF on your LG oven means: The oven experienced a power interruption mid-cycle. PF is an informational alert letting you know the last cooking cycle did not complete due to a power cut. The clock will also need to be reset. The range's self-diagnostic system has detected this condition.
The most frequent cause is brief household power outage during a cooking cycle. Work through the causes and fix steps below in order — many LG oven errors are resolved without a service call.
Error PF is DIY-safe. No tools are required and the fix typically takes under 10 minutes. Follow all steps in sequence.
Electric ranges require a stable 240V dedicated circuit. A partially tripped breaker — where one leg of the double-pole breaker has tripped but not the other — is a common and easily overlooked cause of voltage errors. Fully toggle the breaker off and on before investigating further.
What users usually notice before this code
LG oven warnings like this often appear after interrupted heating, control resets, sensor mismatch, or a fault that returns during warm-up rather than during a stable cook cycle.
Common misdiagnoses
- Assuming the display code proves one exact failed part before the safe first checks are done.
- Replacing a lock or latch too early when alignment, trapped laundry, or startup conditions may still explain the warning.
Most Likely Cause by Symptom
The LG oven may stop, pause, or refuse to complete the cycle normally.
Likely cause: Brief household power outage during a cooking cycle
Check first: SAFETY: No electrical hazard. PF is an informational code.
Common Causes
- Brief household power outage during a cooking cycle
- Circuit breaker tripped while the range was in use
- Momentary power interruption from the utility company
What Not to Do
- Do not leave food in the oven after PF without restarting the cycle — the oven has stopped heating and food may have cooled to an unsafe temperature if the outage was long
Model and Display Variation Notes
Model-family notes
- LG oven display wording and code formats can vary by series.
- If your model behaves differently, check the owner manual before trying any deeper maintenance step.
Display and panel differences
- Panel wording can vary by series, so confirm the exact code pattern before buying parts.
Parts, Tools and Service Options
Manual and model check
Check your exact model and manual before ordering any LG oven parts.
This section stays model-first because exact manual and parts matching matters more than a generic replacement suggestion here.
When Not to Keep Troubleshooting
PF appears repeatedly across multiple days with no household power outages
How to Prevent It Recurring
- Ensure the range is on a dedicated 240V circuit — sharing the circuit with other high-draw appliances can cause momentary voltage drops that trigger PF
Related Error Codes
F42
The oven has detected that the incoming supply voltage is either too high or too low. Electric ranges require a stable 240V supply (two 120V legs) — a missing or weak leg will trigger F42.
F11
The oven's display/control panel and the main control board have lost communication. The two boards cannot exchange data, so the oven cannot accept commands or display status correctly.
Helpful guides for this problem
Guide
What to check before replacing a washing machine door lock
What to rule out before ordering a new door lock, from alignment and load issues to startup problems that mimic a latch fault.
Guide
When to repair vs replace a refrigerator with repeated fault codes
How to think through the repair-versus-replace decision when the same refrigerator warning keeps coming back.
Guide
When repeated dryer error codes usually mean it is time to stop DIY troubleshooting
When a dryer warning has moved past sensible first checks and into the territory where more DIY retries stop helping.
When not to keep pushing DIY troubleshooting
Use the code page for one careful first pass, then stop if the same warning returns or the appliance still cannot get back to normal operation.
Extra notes
- This page is based on LG support material and stays conservative where model-specific guidance may vary.
- The goal is to help you identify safe first checks before you move into parts, service, or model-specific manual lookup.
Source and model notes
Last reviewed: 2026-04-08
Based on: Based on LG support material and edited into consumer-safe guidance for the exact code family on this page.
Model coverage note: LG oven code meanings can vary by series, control panel, and model family, so use this page as a safe starting point rather than a replacement for the model-specific manual.
Important: FixThisError is an independent guide, not the manufacturer. Use your model-specific manual when the panel wording or behavior differs.
Always disconnect power before inspecting appliances. If unsure, contact a licensed appliance technician.