Join Date: Nov 2010
Location: South Fayette/Pittsburgh PA
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feps - Flash EEPROM Programming Signal. An 18-volt DC signal input from the diagnostic tool used by the PCM to initiate programming
sounds like it may be an IDS issue.
I have run into this once before but it was so long ago I can't for the life of me remember any details about it. I can't find anything in the workshop manual about this issue either
Ford Senior Master Tech
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2015 F-250 XLT 6.7L
2006 F-250 6.0L SOLD