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Home >> Hyundai >> 2019 >> Santa Fe SEL Plus, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 74 (Body Control Module Diagnosis) >> DTC B1603-00: CAN Bus Off >> DTC Information And Inspection >> DTC Setting Condition
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DTC Setting Condition

WARNING: This page is about a different car, the 2020 Hyundai Santa Fe. However, it is still accessible from the selected car via links, so may be relevant.
Trouble Shooting Condition Possible Cause
Main Action
  • Check CAN communication
  1. Open/Poor Connection both B-CAN High line and Low line
  2. Simultaneous Short-to-Battery both B-CAN High line and Low line
  3. Simultaneous Short-to-Ground both B-CAN High line and Low line
Prerequisite Condition
  • Power Voltage: Between 9V and 16V
  • B-CAN communication is operating
Threshold Value
  • Impossible to send B-CAN message
Diagnostic Time
  • 2 sec
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