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P1260 Diagnostic Trouble Code Discussion for January 2010

Immobilizer System Malfunction

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Trouble Ticket Help Requests for DTC P1260
Help Request Posted
2001 Mercury Grand Marquis LS 4.6L No Start VIN: 2MEFM75W71
P1260: Theft deterrent. Since doing the last servece I have looked into the code that was present at the time(don't remember what it was) but searching iatn, members had replaced PCM's to correct the problem. Had trouble understanding why PCM fixed this problem at first. Customer h...
January 17, 2010