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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Autonomous Emergency Braking (AEB) System Diagnosis (HEV) >> DTC C1804-87: CAN Time-Out LKAS >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible cause
DTC Strategy
  • Monitoring CAN messages
  1. Faulty LKAS System
  2. Open or short in C-CAN communication line
Enable conditions
  • Engine run (engine run at least for 2 seconds)
  • Battery voltage is between 9 volt and 16 volt
  • No CAN Bus Off
Threshold value
  • When abnormal LKAS signal (Invalid) received from LKAS Module via C-CAN.
Diagnosis Time
  • 500 milliseconds
Fail Safe
  • AEB Disengagement/Shutdown
  • AEB Warning lamp turns 'ON'
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