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Home >> Lexus >> 2007 >> LS 460L >> Repair and Diagnosis >> External Pages >> Different car >> Section 640 (Security Control System) >> Component Diagnosis >> B2556 Push-Button Ignition Switch >> DTC Logic >> DTC Detection Logic
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DTC Detection Logic

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTION LOGIC CHART

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B2556 PUSH-BUTTON IGNITION SWITCH BCM detects the push-button ignition switch stuck to ON for 100 seconds or more.
  • Harness or connectors

    (Push-button ignition switch circuit is shorted.)

  • Push-button ignition switch