# B2420 on the 2011 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.

This code is specific to a manufacturer and is not described here.

## Bulletins for this model year that name B2420

- [10192476](https://open.wenmarpro.com/bulletins/10192476), 2021-05-10: 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.