U0143
Lost Communication with Body Control Module C
2014-2021 BMW i3 Range Extender
Moderate SeverityNetworkGeneric (SAE)
Description
Cannot communicate with the tertiary body control module found on some full-size vehicles.
Symptoms
- Specific body electronic features inoperative
- Liftgate not working
- Power running boards disabled
- Specific zone lighting off
Common Causes
- BCM C failure
- CAN bus wiring
- Module power loss
- Fuse blown
Diagnostic Steps
- Check BCM C fuse
- Test power and ground
- Check CAN wiring
- Test affected features directly
Repair Notes
Check fuses and wiring. Only found on vehicles with three or more body control modules.
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
U0143 on Other Vehicles
Common Questions
What does code U0143 mean on a 2014-2021 BMW i3?
U0143 stands for "Lost Communication with Body Control Module C". Cannot communicate with the tertiary body control module found on some full-size vehicles.
What are the symptoms of U0143 on a BMW i3?
Common symptoms of U0143 include: Specific body electronic features inoperative, Liftgate not working, Power running boards disabled, Specific zone lighting off.
What causes U0143 on a 2014-2021 BMW i3?
Common causes of U0143 include: BCM C failure, CAN bus wiring, Module power loss, Fuse blown.