LG WD14030RD Service Manual page 26

Pressure Sensor S/W Error (PE)
Is the Connector connected correctly to
the Main PCB and the Pressure Switch
Or is the Harness alright ?
YES
Is the resistance of the Pressure Switch
out of range?
[Pin1 ~ Pin3]
21~23Ω)
NO
Is the air chamber and the tube clogged?
NO
Replace the Main PCB.
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NO
?
YES
YES
26
Reconnect or repair the Connector.
Or replace the Harness.
Replace the Pressure Switch.
Check air chamber and remove the foreign material.