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F150 PATS Problem

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ErickBaker

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I have a 2006 F150 that came in on the hook due to a no start. The only code in the PCM was a P1601-PATS recieved an unprogrammed key. The pinpoint test was vague at best and turned up no problems. I programmed the two keys the customer brought with the truck and now the truck starts fine.

 

Customer states vehicle usually needs 2-3 attempts to start in the morning and the anti-theft light flashes when the truck doesn't want to start. I also made sure there were no metallic objects or other PATS keys on his key ring.

 

Hotline's only advice was to place the PCM in the freezer for a few hours to see if there was a fault internally that was brought out by the cold. No luck there. Anyone have any ideas of what else I should check or why the truck would forget it's PATS keys? Thanks in advance.

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