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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 88 (4WD Control System Diagnosis) >> U0127: CLU 13 Error in Communication >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

WARNING: This page is about a different car, the 2021 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.
Item Detecting Condition Possible Cause
DTC Strategy
  • CAN message monitoring
  • Poor connector connection
  • CAN communicaiton circuit (open, short)
    • CAN high line open
    • CAN low line open
    • CAN high and low line open
    • CAN high line short to battery
    • CAN low line short to battery
    • CAN high, low line short to each other
    • CAN high, low line short to each other and short to ground
  • Terminating Resistance fault
  • Transmitting controller BUS OFF
  • Transmitting controller disconnected
  • Transmitting controller power, fuse or ground fault
  • Transmitting controller H/W, S/W fault
  • CAN line noise
  • CLU fault (CAN module fault)
Enable Condition
  • Engine "ON"
  • Normal operation
Threshold Value
  • CLU CAN message is not received (after entering the initial CAN signal
Detecting Time
  • 2s
Fail Safe
  • 4WD prohibited
MIL
  • "ON"