P0171 on the 2002 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.
| 17718 | 2004-07-24. Service bulletin. MALFUNCTION INDICATOR LAMP (MIL) ON WITH DIAGNOSTIC TROUBLE CODE (DTC) P0171, P0172, P0174 OR P0175. *TT |
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| 17255 | 2004-01-20. Service bulletin. HARD START/LONG CRANK WHEN COLD OR STUMBLES/SURGES DURING DRIVE-AWAY. POSSIBLE DIAGNOSTIC TROUBLE CODES P0171, AND P0174 OR P0172 AND P0175. *TT |
| 16094 | 2002-11-05. Service bulletin. SOME VEHICLES MAY EXHIBIT FUEL DIAGNOSTIC TROUBLE CODES P0171, P0172, P0174, P0175 OR MASS AIR FLOW DIAGNOSTIC TROUBLE CODES P0102, P0103, P0112, P0113. *TT |
| 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 |
4 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.