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Home >> Kia >> 2012 >> Optima LX, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (Body Control Module (BCM) Diagnosis) >> DTC B1603: CAN Bus Off >> General Information >> DTC Detecting Condition
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General Information: DTC Detecting Condition

WARNING: This page is about a different car, the 2013 Kia Sportage and 2012 Kia Sportage. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION CHART

Item Detecting Condition Possible Cause
DTC Strategy
  • CAN Communication Check
  1. BCM 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
  • BCM 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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