P0171 on the 2012 Infiniti QX56
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.
| ITB11054A | 2021-05-10. Service bulletin. IF YOU CONFIRM: Any of the following DTCs are stored in the ECM: - P0031 / P0051, P0032 / P0052, P0130 / P0150, P0133 / P0153, P2A00 / P2A03, P1148 / P1168 OR Any of the following DTCs are stored in the ECM as a result of one of the A/F sensors: - P0300 - P0308, P0171 / P0174, P0172 / P0175 ACTION: 1. Replace the A/F sensor that relates to the stored DTC(s) (B1 and/or B2). 2. Refer to step 7 in the SERVICE PROCEDURE to confirm if ECM reprogramming applies. 3. If it applies, reprogram the ECM. See this bulletin for further detail. |
|---|
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.