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Home >> Kia >> 2021 >> Sorento Hybrid EX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (HEV) (11 Of 11) >> DTC U01B4-00: Lost Communication With Brake System Control Module >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

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