Back to 2018 Audi A6
Help
2018 AUDI A6
3.0L Supercharged V6•AWD•AUTOMATIC•gas•supercharged
2 active safety recalls on this vehicle — view recalls
Founding sponsor spot is openYour name on every procedure for this vehicle, permanently.Sponsor — $99 →
Repairs0Labor507Torque3472Fluid7DTC1143Battery1Maintenance0Recalls2
U0127high severityNetwork

Lost Communication with Parking Brake Control Module

on 2018 Audi A6 3.0L Supercharged V6 · AWD

What this code means

Cannot communicate with the electronic parking brake module.

Symptoms

  • Parking brake warning light
  • Electronic parking brake inoperative
  • Brake warning message
  • Cannot release parking brake
  • Hill hold not working

Common causes

  • EPB module failure
  • CAN bus wiring
  • Module power loss
  • Fuse blown
  • EPB actuator failure

Diagnostic steps

  1. Check EPB module fuse
  2. Test module power and ground
  3. Check CAN wiring
  4. Try manual EPB release procedure
  5. Test EPB actuator motors

Repair notes

If parking brake is stuck engaged, use manual release procedure first. Check fuses.

🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITE
Shop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Other Network codes on this vehicle

🔌 Need this data in your app? It's all in the free API →
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years. Spot an error? Use the Help link above — a human reads every report.
Stuck on this repair? Take it to The Diag Desk — ask a master tech about this exact car → real human answer within 24h, never AI
Share:XRedditFBWhatsAppThreadsEmail
⚠ STILL BEHIND THE PAYWALL
The 2018 Audi A6 repair data is incomplete because no one has sponsored it yet. For $99, we generate the full step-by-step procedures, then fact-check them with a second AI pass and your expert review. Your name on every procedure, permanently.
The same data would cost $169/mo from Mitchell1 or $30/year from ALLDATAdiy — and you'd be renting access, not freeing it. Sponsor once, free forever.
Sponsor the Audi A6 — $99 →
Building an app?
Free API access to all this data — 10 requests/day, no card required.
Get an API key →
Run a shop?
Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.
Try ShopBase →