P0171 on the 2005 Ford F-450
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 05134 | 2005-10-08. Service bulletin. HARD START/LONG CRANK, ROUGH IDLE, ENGINE IDLE MISFIRE-MIL-DTCS P0300 THROUGH P0308, P0171, P0172, P0174, P0175, P0316, P2195, P2196, P2197, P2198. *SC |
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1 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.