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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Adaptive Front Lighting System Diagnosis (HEV) >> DTC B1304-87: Engine Speed Signal Fault >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • Signal monitoring
  1. CAN communication circuit Open/Short
  2. Faulty EPCU
Enable Conditions
  • IG ON
Threshold Value
  • MOTOR RPM is invalid value CAN communication signal not output from EPCU
Detecting Time
  • 1 second
Check Lamp
  • No
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