FixVault

DTC Detection Logic

DTC DETECTION LOGIC

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
B2553 IGNITION RELAY BCM detects a difference of signal for 2 seconds or more between the following information.
  • Ignition relay (fuse block) ON/OFF operation
  • Ignition relay (fuse block) feedback.
  • Harness or connectors (ignition relay feedback circuit is open or short)
  • BCM
  • IPDM E/R