Service bulletins for the 2011 Infiniti QX56
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
167 on file from NHTSA, as of 2026-10-19.
About B2420 on the 2011 Infiniti QX56: what the code means, and the bulletins and recalls about the same components.
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By trouble code
Only bulletins with trouble code: B2420 are shown. Show all
| ITB14054 | 2021-05-10. Service bulletin. EQUIPMENT; STRUCTURE:BODY:DOOR; STRUCTURE. SERVICE INFORMATION If the auto back door will not operate automatically (operates only in manual mode), first note some conditions that may cause this: * Is DTC B2420 set as "current" in the back door control unit? If the auto back door "CLOSE SW" (close switch) state does not change from ON to OFF after 3 attempts to close the auto back door, B2420 will be set and the auto feature will be disabled. Please see this bulletin for further details. |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.