LEMON Manuals
: Even more car manuals for everyone: 1960-2025
Home
>>
Infiniti
>>
2011
>>
QX56 AWD
>>
Repair and Diagnosis (Single Page)
>>
Body & Frame
>>
Door Locks
>>
Security Control System
>>
DTC/Circuit Diagnosis
>>
DTC B2556: Push-Button Ignition Switch
>>
DTC Logic
>>
DTC Detection Logic
April 5, 2026:
LEMON Manuals is launched!
Read the announcement.
DTC Detection Logic
DTC DETECTION LOGIC
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.
Harness or connectors (Push-button ignition switch circuit is shorted.)
Push-button ignition switch
BCM