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Home >> Kia >> 2024 >> Telluride SX X-Line >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Identity Authentication Unit Diagnosis >> DTC B1603-00: CAN Bus Off >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Check CAN communication
  • Poor connector connection
  • CAN communication circuit (open, short)
    • CAN high line open
    • CAN low line open
    • CAN high and low line open
    • CAN high line short to 12V battery
    • CAN low line short to 12V battery
    • CAN high, low line short to each other
    • CAN high, low line short to each other and short to ground
  • Terminating resistance fault
  • Transmitting controller bus off
  • Transmitting controller disconnected
  • Transmitting controller power, fuse or ground fault
  • Transmitting controller H/W, S/W fault
  • CAN line noise
  • ICU faulty (CAN module faulty)
Enable Conditions
  • Normal 12V battery voltage
Threshold Value
  • CAN high, low communication line simultaneous power short or ground
Diagnosis Time
  • 2s
Erase Condition
  • CAN communications return to normal state