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Home >> Kia >> 2023 >> Carnival EX >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> SBW Control Unit (SCU) Diagnosis >> DTC U0121-82: Lost Communication With Anti-Lock Brake System (ABS) Control Module >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • CAN communication monitoring
  • Poor connector connection
  • Open or short in CAN communication line
  • Faulty related module
  • Faulty HECU
Enable Condition
  • Ignition "ON"
  • Battery voltage is greater than 10V
  • HECU messages received at least once
Threshold Value
  • Alive counter value does not change
Detecting Time
  • 2.1s
MIL ON Condition
  • 2 driving cycles
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