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2023 HYUNDAI TUCSON
2.5L I4•AWD•AUTOMATIC•gas
2 active safety recalls on this vehicle — view recalls
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Repairs425Labor501Torque4443Fluid10DTC1092Battery1Maintenance0Recalls2
C0501moderate severityChassis

Transfer Case Control Module Communication

on 2023 Hyundai Tucson 2.5L I4 · AWD

What this code means

Loss of communication between the transfer case module and other vehicle systems.

Symptoms

  • 4WD light flashing
  • Service 4WD warning
  • Cannot select drive modes
  • Transmission may default to limp mode

Common causes

  • CAN bus wiring fault to module
  • Module connector disconnected
  • Module power loss
  • CAN bus termination issue

Diagnostic steps

  1. Check CAN wiring to transfer case module
  2. Inspect module connector
  3. Verify power and ground at module
  4. Look for U-codes related to transfer case
  5. Check CAN bus resistance

Repair notes

Repair CAN wiring or connector. Replace module if communication chip failed.

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🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Mechanic · 20+ years. Spot an error? Use the Help link above — a human reads every report.
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