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2008-2015 AUDI R8
4.2L V8•AWD•AUTOMATIC•gas•BYH
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Repairs0Labor492Torque4225Fluid9DTC1133Battery1Maintenance0Recalls0
U0064high severityNetwork

Lost Communication with Diagnostic Gateway Module

on 2008-2015 Audi R8 4.2L V8 · AWD

What this code means

Cannot communicate with the diagnostic gateway that routes scan tool communication to vehicle buses.

Symptoms

  • Scan tool cannot connect
  • OBD port no communication
  • Cannot read any DTCs
  • Cannot perform diagnostics

Common causes

  • Gateway module power failure
  • Gateway module failure
  • CAN bus issue to gateway
  • OBD port wiring damage
  • Fuse blown

Diagnostic steps

  1. Check gateway module fuse
  2. Test power and ground at gateway
  3. Check OBD port pin connections
  4. Test CAN wiring from OBD port to gateway
  5. Verify gateway module operation

Repair notes

Check OBD port wiring and gateway module power supply. Common on VW/Audi vehicles.

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