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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Adaptive Front Lighting System Diagnosis (HEV) >> DTC B1639-81: LIN Communication Error DBL (Dynamic Bending Light) Left >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Signal monitoring
  1. LIN communication circuit is opened/shorted
  2. Left swivel motor connection is opened
  3. Faulty Left Swivel Motor of left side headlamp
Enable Conditions
  • IG ON
Threshold Value
  • left Swivel Actuator LIN communication error
Detecting Time
  • 3 seconds
Check Lamp
  • AFLS warning lamp on
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