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Home >> Kia >> 2021 >> Forte EX >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (Integrated Central Control Unit Diagnosis) >> DTC B1603-00: B-CAN Bus Off Error >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

WARNING: This page is about a different car, the 2024 Kia Forte. However, it is still accessible from the selected car via links, so may be relevant.
Item Detecting Condition Possible Cause
DTC Strategy
  • CAN signal monitoring
  • Poor connector connection
  • Short in B-CAN high line
  • Short in B-CAN low line
  • Short circuit between CAN high and low line
  • Faulty modules that connected to B-CAN
Enable Condition
  • 5s after Ignition "ON"
Threshold Value
  • B-CAN Bus off is detected or B-CAN Limphome status
Diagnosis Time
  • 2s
Symptom
  • B-CAN communication is not possible
Erase Condition
  • Erase with KDS after the failure solved