FixVault
Home › Kia › 2024 › Carnival EX › Repair and Diagnosis › Engine Performance › System › Engine Control System Diagnosis (8 Of 8) › DTC U01B4-00: Lost Communication With Brake System Control Module 'B' › DTC Information › DTC Detecting Condition

DTC Information: DTC Detecting Condition

Item Detecting Condition Possible Cause
DTC Strategy
  • CAN monitoring
  • Poor connector connection
  • Faulty HECU
  • HECU circuit
Enable Condition
  • Normal battery voltage (9 to 16V)
Threshold Value
  • Communication lost with HECU
Diagnostic Time
  • 2s
MIL ON Condition
  • 2 driving cycles
About FixVault