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P0581 Diagnostic Trouble Code Discussion for May 2015

Speed Control Switch 1 Circuit High Voltage


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Trouble Ticket Help Requests for DTC P0581
Help Request Posted
2008 Ford F-350 Super Duty XL 5.4L Hesitation, Cuts out VIN: 1FDSF30558
P0581: testing and results. came from 2 other shops, that replaced 5 fuel pumps in a row never left the shop oem., bogs down, no power, hot under load . this is reading warm with no problem FRP at 40 psi, FP% 40 psi, FRP DSD 40%.readings under med, heavy load hot FRP 6psi, fp% 41 ,FRP DS...
May 27, 2015
2008 Ford F-350 Super Duty XL 5.4L Hesitation, Cuts out VIN: 1FDSF30558
P0581: testing and results. came from 2 other shops, that replaced 5 fuel pumps in a row never left the shop oem., bogs down, no power, hot under load . this is reading warm with no problem FRP at 40 psi, FP% 40 psi, FRP DSD 40%.readings under med, heavy load hot FRP 6psi, fp% 41 ,FRP DS...
May 29, 2015