U0130
Lost Communication with Trailer Brake Control Module
2014-2021 BMW i3 Range Extender
Moderate SeverityNetworkGeneric (SAE)
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 2014-2021 BMW i3?
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 BMW i3?
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 2014-2021 BMW i3?
Common causes of U0130 include: Trailer brake module failure, Trailer wiring issue, CAN bus wiring, Module power loss, Fuse blown.