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P1260 Diagnostic Trouble Code Discussion for January 2009

Immobilizer System Malfunction

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Trouble Ticket Help Requests for DTC P1260
Help Request Posted
2000 Ford F-150 5.4L No Start VIN: 213456789Y
P1260: Theft deterent. ... another shop. Originally truck came in with a 171 lean code, after their "diagnosis" they determined ECM was bad. They got an A1 cardone reman ECM, had it programmed through Oreilly. They put it in, now wont start with theft light on and flashing. ...
January 14, 2009
2001 Ford F-150 King Ranch 5.4L Poor Idle Quality, Stall, MIL Lamp on VIN: 1FTRW08L71
P1260: . Good mourning guys I have this 01 f150 that is giving me hope for early retirement. Well came in with all of the codes listed. Found LTFT lean and cleaned MAF and reset,LTFT returned to specs.In mod $6 I had a misfire on every cylinder. Next took if for a test...
January 15, 2009