P0172 on the 1999 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.
| 15190 | 2001-11-16. Service bulletin. SOME VEHICLES MAY EXHIBIT SURGE, HESITATION, ROUGH IDLE OR MALFUNCTION NDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODES P0171, P0172, NP0174, P0175. *ET |
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| 14547 | 2001-04-02. Service bulletin. SOME VEHICLES MAY EXHIBIT SURGE, HESITATION OR ROUGH IDLE OR MALFUNCTION INDICATOR LAMP ON W/ DIAGNOSTIC TROUBLE CODES P0171, P0172, P0174, AND P0175. *JB |
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.