LG Dishwasher PF Error: Power failure during cycle
LG dishwasher error — here’s what you need to know. The PF error code on your LG dishwasher indicates Power Failure – Cycle Interrupted by Power Outage. This is a Low severity issue. What Does PF Mean on an LG Dishwasher? The PF code is an informational notice that the dishwasher’s wash cycle was cut […]
~99%
DIY Fixable
From create-lg-dishwasher-extra.sh
Typical Repair Cost
1 – 5 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Yes. PF is purely an informational code — no component has failed. Acknowledge the notification, restart the cycle, and the dishwasher will operate normally.
Can I reset the code?
Yes. Press any button to clear PF and restart the desired wash cycle. The error clears automatically; no factory reset or service procedure is required.
When to stop immediately?
Stop if you notice: PF appears every cycle with no known power outages — the circuit breaker may be repeatedly tripping, which requires investigation., The circuit breaker trips again immediately after reset, indicating a short circuit in the dishwasher or home wiring..
Symptoms You May Notice
Dishwasher is off and unresponsive when you return
A power interruption mid-cycle leaves the dishwasher silent and dark; when power is restored the unit powers back on but does not resume the cycle automatically.
PF displayed on the control panel at startup
The first thing displayed when the dishwasher regains power is the PF notification, informing the user that the previous cycle was not completed.
Dishes still dirty or soapy after the cycle appeared to run
Because the cycle was truncated by the power loss, dishes may be partially washed, still have detergent residue, or not have gone through the full rinse and dry phase.
Circuit breaker in the tripped position
Checking the electrical panel reveals the dishwasher circuit breaker has tripped, confirming the power cut was caused by the breaker rather than a utility outage.
Possible Causes
Home power outage
A utility power interruption, even momentary, stops the dishwasher mid-cycle and generates a PF code when power is restored.
DIY PossibleTripped circuit breaker
An overloaded circuit or a transient fault trips the dishwasher's circuit breaker, cutting power in exactly the same way as a utility outage.
DIY PossibleDishwasher unplugged or loose power connection
The power cord being partially pulled from the outlet, or a loose connection at the junction box under the sink, interrupts power mid-cycle.
DIY PossibleSafe Checks You Can Do
-
1
Acknowledge the PF code
Press any button — typically the Power or Start button — to acknowledge and clear the PF notification. The dishwasher will return to the cycle selection screen.
-
2
Check the circuit breaker
If PF appeared unexpectedly, go to your electrical panel and check the dishwasher's circuit breaker. If tripped, flip it fully OFF and then fully ON before restarting a cycle.
-
3
Restart the wash cycle
Select the appropriate wash cycle and press Start. The dishwasher will operate normally from the beginning of the cycle. If dishes were partially washed, a full cycle will complete the job.
When to Call a Professional
Contact a qualified technician if:
- Circuit breaker trips repeatedly under normal dishwasher operation, pointing to a wiring fault or component drawing excess current.
- The power connection under the sink shows signs of arcing, loose wiring, or burn marks at the junction box.
- Additional error codes appear alongside PF after power restoration, indicating hardware damage from the interruption.
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
Dishwasher Repair Service Schedule Appointment