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2017 AUDI S5

3.0L Supercharged V6AWDAUTOMATICgassupercharged
Repairs0Labor497Torque3689Fluid9DTC922Battery0Maintenance0Recalls0
U0138moderate severityNetwork

Lost Communication with All Terrain Control Module

on 2017 Audi S5 3.0L Supercharged V6 · AWD

What this code means

Cannot communicate with the off-road or terrain management control module.

Symptoms

  • Off-road mode not available
  • Terrain select not working
  • 4WD features limited
  • Terrain response warning

Common causes

  • Terrain module failure
  • CAN bus wiring
  • Module power loss
  • Fuse blown

Diagnostic steps

  1. Check terrain module fuse
  2. Test power and ground
  3. Check CAN wiring
  4. Test terrain mode switch
  5. Scan for terrain module DTCs

Repair notes

Check fuses and mode selector switch. Module may be integrated with transfer case controller.

Other Network codes on this vehicle

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