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.
NO 
YES 
YES 
Reconnect or repair the Connector.
Or replace the Harness.
Replace the Pressure Switch.
Check air chamber and remove the foreign material.
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