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Home >> Infiniti >> 2021 >> QX80 Premium Select, RWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Security Control System (DTCS) >> BCM (BCM) >> DTC B2556: Push-Button Ignition Switch >> DTC Description >> DTC Detection Logic
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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