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Home >> Hyundai >> 2021 >> Santa Fe Calligraphy, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 152 (Double Clutch Transmission System Diagnosis - 2.5T (4 Of 4) (Except HEV)) >> DTC U0121-87: Lost Communication With Anti. Lock Brake System (ABS) Control Module >> DTC Information And Inspection >> DTC Detecting Condition

DTC Information And Inspection: DTC Detecting Condition

WARNING: This page is about a different car, the 2022 Hyundai Santa Fe. However, it is still accessible from the selected car via links, so may be relevant.
Item Detecting Condition Possible Cause
DTC Strategy
  • Wheel speed CAN message received
  1. Poor connector connection
  2. Faulty CAN communication circuit
  3. Faulty ABS/ESC
Enable Condition
  • Battery voltage is above 10V
  • 0.5s after ignition switch on
Threshold Value
  • No wheel speed CAN message
Diagnosis Time
  • 2.2s
MIL
  • 2 driving cycles
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