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Home >> Kia >> 2017 >> Optima LX 1.6T >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Wireless Power Charger Diagnosis (Except HEV) >> DTC B1603: Can Bus Off >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • CAN Communication Monitoring
  1. Poor Connector Connection
  2. Defected B-CAN Communication Circuit
Enable Condition
  • Normal Battery Voltage
Threshold Value
  • B-CAN BUS OFF is detected
Recovery Condition
  • Clear with KDS/GDS after problem is fixed
Recovery Time
  • 1000ms


NO. Stop charging condition Recovery condition Indicator
1 Door open Door close LED OFF
2 No smart key Smart key detected LED OFF
3 Foreign object detection No foreign object LED Flash
4 Over current greater than 4.5A Normal current LED Flash
5 Internal temp. greater than 70°C (158°F) Internal temp. less than 60°C (140°F) LED Flash
6 ACC Off Ignition switch On or ACC On LED OFF