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Home >> Hyundai >> 2020 >> Sonata SEL >> Repair and Diagnosis >> Electrical >> Gauges >> Head Up Display Diagnosis (Except HEV) >> DTC B1603-00: CAN Bus OFF >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

Item Detecting Condition Possible Cause
Main Action
  • Monitor the CAN communication
  1. Open/Poor Connection both C-CAN High line and Low line
  2. Simultaneous Short-to-Battery both C-CAN High line and Low line
  3. Simultaneous Short-to-Ground both C-CAN High line and Low line
Prerequisite Condition
  • Power Voltage: Between 9V and 16V
  • C-CAN communication: Active
Threshold Value
  • Impossible to send C-CAN message
Diagnosis Time
  • 2 sec
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