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Home › Infiniti › 2012 › M37 Base › Repair and Diagnosis › Body & Frame › Door Locks › Security Control System (With Intelligent Key System) › DTC/Circuit Diagnosis › DTC B2556: Push-Button Ignition Switch › DTC Logic › 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
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