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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 85 (Smart Junction Block Diagnosis (HEV)) >> DTC B1603: CAN Bus Off >> General Information >> DTC Detecting Condition

General Information: DTC Detecting Condition

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Item Detecting Condition Possible Cause
DTC Strategy
  • CAN Communication Check
  • SJB are not Sleep condition
  1. CAN High and Low Line short to ground coincident
  2. CAN High and Low Line short to battery coincident
Enable Conditions
  • SJB power ON
Threshold Value
  • CAN High/Low: 0V or B+
Diagnostic Time
  • Immediately
DTC Erasing Time
  • DTC is erased immediately after trouble fixed
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