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2019 AUDI A6
3.0L Turbo V6•AWD•AUTOMATIC•gas•turbo
7 active safety recalls on this vehicle — view recalls
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Repairs0Labor495Torque4351Fluid8DTC1145Battery1Maintenance0Recalls7
U0103high severityNetwork

Lost Communication with Gear Shift Control Module

on 2019 Audi A6 3.0L Turbo V6 · AWD

What this code means

Cannot communicate with the gear shift module that manages electronic shifter input.

Symptoms

  • Shifter inoperative
  • Transmission stuck in park
  • Shift indicator not matching
  • Cannot select gears

Common causes

  • Shift module power failure
  • CAN bus wiring issue
  • Shift module failure
  • Shifter cable disconnected
  • Fuse blown

Diagnostic steps

  1. Check shift module fuse
  2. Test module power and ground
  3. Inspect CAN wiring
  4. Check shifter mechanism
  5. Test shift position switches

Repair notes

Check shift module power supply. Verify shifter mechanism is functional.

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