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P1780 Diagnostic Trouble Code Discussion for December 2006

Park/Neutral Position Switch Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1780
Help Request Posted
2000 Ford F-350 Super Duty XL 5.4L Excessive Emissions, Poor Idle Quality, Surge, Misfire, Poor Fuel Economy VIN: 1FDWF36L5Y
P1780: Transmission Control Switch Out Of Self-Test Range. truck in with timing chain bad. make repair, still not running right. sent to ford to reflash pcm, code came up stating was there because it needed to be reflashed, & would have a poor idle untill was repaided. ford told me that the valve guides were bad o...
December 05, 2006
2000 Ford F-350 Super Duty XL 5.4L Excessive Emissions, Poor Idle Quality, Surge, Misfire, Poor Fuel Economy VIN: 1FDWF36L5Y
P1780: Transmission Control Switch Out Of Self-Test Range. truck in with timing chain bad. make repair, still not running right. sent to ford to reflash pcm, code came up stating was there because it needed to be reflashed, & would have a poor idle untill was repaided. ford told me that the valve guides were bad o...
December 05, 2006