Lost Communication with Trailer Brake Control Module
2018-2018 Audi A6 3.0L Supercharged V6
The 2018 Audi A6 is equipped with a 3.0L V6 engine. Below you'll find detailed u0130 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
Cannot communicate with the integrated trailer brake controller.
Symptoms
- Trailer brake warning light
- Trailer brakes not functioning
- Trailer brake gain not adjustable
- Towing mode limited
Common Causes
- Trailer brake module failure
- Trailer wiring issue
- CAN bus wiring
- Module power loss
- Fuse blown
Diagnostic Steps
- Check trailer brake module fuse
- Test module power and ground
- Check trailer connector wiring
- Inspect CAN wiring
- Test trailer brake output
Repair Notes
Check trailer wiring connector first. Verify factory trailer brake module power supply.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0130 on Other Vehicles
Common Questions
What does code U0130 mean on a 2018-2018 Audi A6?
U0130 stands for "Lost Communication with Trailer Brake Control Module". Cannot communicate with the integrated trailer brake controller.
What are the symptoms of U0130 on a Audi A6?
Common symptoms of U0130 include: Trailer brake warning light, Trailer brakes not functioning, Trailer brake gain not adjustable, Towing mode limited.
What causes U0130 on a 2018-2018 Audi A6?
Common causes of U0130 include: Trailer brake module failure, Trailer wiring issue, CAN bus wiring, Module power loss, Fuse blown.
Last updated: March 2026