P0140 on the 2000 Infiniti QX4
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.
| ITB01045A | 2002-04-24. Service bulletin. SUBJECT REGARDING MALFUNCTION INDICATOR LAMP ON WITH REAR OXYGEN SENSOR DIAGNOSTIC TROUBLE CODE PO138-P0140 OR P0158-P0160 STORED. *YH |
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| ITB01045 | 2001-10-05. Service bulletin. SOME VEHICLES MAY EXHIBIT A MALFUNCTION INDICATOR LAMP (MIL) ON WITH REAR OXYGEN SENSOR DIAGNOSTIC TROUBLE CODES P0138, P0139, P0140, P0158, P0159, AND P0160 STORED IN THE ENGINE CONTROL MODULE (ECM). *TT |
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.