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Home >> Hyundai >> 2015 >> Santa Fe GLS, AWD >> Repair and Diagnosis >> Transmission >> Transfer Case >> 4WD Control System Diagnosis >> DTC U0121: Lost Communication With Anti-Lock Brake System (ABS) Control Module >> DTC Information >> DTC Detecting Condition
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DTC Information: DTC Detecting Condition

Item Detecting Condition Possible ause
DTC Strategy
  • CAN Signal Check
  1. Poor connection
  2. Open or short in CAN Communication Line
  3. Error in ABS/ESC unit
  4. Error in Wheel speed sensor
Enable Conditions
  • IG "ON" or Engine "ON"
Threshold Value
  • It can't get some CAN signals from ABS/ESC module.
Detecting Time
  • 2 seconds
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