P0171 on the 1997 Ford Ranger
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.
| 01205 | 2002-02-26. Service bulletin. SOME VEHICLES MAY EXHIBIT VACUUM OR AIR LEAKS IN THE INTAKE MANIFOLD AND / OR ENGINE SYSTEM CAUSING DIAGNOSTIC TROUBLE CODES P0171 AND OR P0174. *TT |
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| 9868 | 1998-07-22. Service bulletin. A ROUGH IDLE, STALLING AT AN IDLE AND/OR DIAGNOSTIC TROUBLE CODES (DTCS) P0171, P0174, AND/OR P1151 MAY BE STORED IN MEMORY ON SOME VEHICLES WITH A 4.OL ENGINE. *YC |
2 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.