it is actually a LF code
This error message occurs only if the machine control board
sees an open circuit at P17. If this is the case:
¦ Press Stop/Cancel to clear the display.
¦ With the power disconnected, check the upper harness
connection to P17 on the machine control. Look for any
contaminants on the contacts. There should be a closed
circuit in the harness between P17 contacts 1 and 3.
¦ Replace the upper harness or machine control as necessary