WARNING: This page is about a different car, the 2019 Nissan Armada and 2018 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B2556
PUSH-BTN IGN SW
BCM detects the push-button ignition switch stuck at ON for 100 seconds or more.