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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Adaptive Front Lighting System Diagnosis (HEV) >> DTC B1621-01: ECU Hardware Fault >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • ECU H/W monitoring
  1. Faulty AFLS ECU
Enable Conditions
  • IG ON
Threshold Value
  • Faulty in ECU hardware (A/D converter fail)
Detecting Time
  • Immediately
Check Lamp
  • No
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