Which part is usually at fault for LG error PF?

The most commonly implicated component is the control board.

What is the first thing to try for LG error PF?

Ensure the dishwasher is on a dedicated fifteen-amp circuit without an extension cord, then press any panel key to clear the display after an outage.

Error PF Informational US market

PF on a LG dishwasher usually means: A power failure occurred during the cycle. On a LG Dishwasher, code PF points to the control board.

Fix it fast: Confirm dedicated power. Full ranked steps below.

Manufacturer source Updated Oct 17, 2026 View source

Try these in order. Stop when the code clears.

1 Confirm dedicated power
Easy
- Ensure the dishwasher is on a dedicated fifteen-amp circuit without an extension cord, then press any panel key to clear the display after an outage.
Source

Excess suds formed from the wrong detergent or an unlevel installation.

The child-lock or control-lock feature is engaged. On a LG Dishwasher, code CL points to the control panel.

Overfill or leak protection was triggered by the flow switch.

The tub filled beyond the safe level and drained automatically.

A water-heating fault was detected. On a LG Dishwasher, code HE points to the heating element.

Insufficient water reached the tub within the fill window. On a LG Dishwasher, code IE points to the water inlet valve.

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