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B1602 Diagnostic Trouble Code Discussion for April 2013

PATS Received Invalid Format of Key Code From Ignition Key Transponder

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Trouble Ticket Help Requests for DTC B1602
Help Request Posted
2006 Ford Expedition XLT 5.4L No Start VIN: 1FMPU16596
B1602: PATS received invalid FMT/ key CD. Need some Ford Tech help. The vehicle has had intermitent no starts and now there is a no start all the time. Engine cranks good, may fire two or three times now and then. I am not too familiar with this security system to know what to do next. Would appreciat...
April 10, 2013